Re: Anyone using a Bigma 50-500..................
I don't think you need to switch SR of in those situations. TC makes SR less effective, but it still does a rather good job. I haven't tested it out really, but this is what my instincts tells me. MaritimTim 2008/5/10 John Whittingham [EMAIL PROTECTED]: Hi Patrick Yes it's a great lens by all accounts, I was considering A Sigma 400/5.6 APO Tele Macro (s/h) and 1.4x 2x EX converters but I'm back to my SR problems with converters. I'm thinking of forgetting the SR problem and getting myself a lighter tripod to carry, then whenever I need to use a TC for extra reach I'll tripod mount and switch SR off Regards, John -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
- Original Message - From: Tim Øsleby Subject: Re: Anyone using a Bigma 50-500.. I don't think you need to switch SR of in those situations. TC makes SR less effective, but it still does a rather good job. I haven't tested it out really, but this is what my instincts tells me. Over on the Dysfunctional Idiotic Pentax Site, there is a thread going on about how Pentax MUST support teleconverters or lose all credibility in the marketplace. I ran a little test yesterday with an M200/4 and 2X-S converter and confirmed what I recall discovering when the K10 came out, which was that shake reduction still does work very well, even if it doesn't have the precise focal length dialed in. I suppose that to make the DIPS happy they could put a multiplication factor option into the SR setup function, but my own cursory experience with TCs and SR indicates it isn't necessary. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
With the M2004 and the A2X-S converter you can dial in 400mm shake reduction when you turn the camera on. I have dialed in 800mm (the max) when using the A400/5.6 with the A2X-S. Paul On May 11, 2008, at 10:46 AM, William Robb wrote: - Original Message - From: Tim Øsleby Subject: Re: Anyone using a Bigma 50-500.. I don't think you need to switch SR of in those situations. TC makes SR less effective, but it still does a rather good job. I haven't tested it out really, but this is what my instincts tells me. Over on the Dysfunctional Idiotic Pentax Site, there is a thread going on about how Pentax MUST support teleconverters or lose all credibility in the marketplace. I ran a little test yesterday with an M200/4 and 2X-S converter and confirmed what I recall discovering when the K10 came out, which was that shake reduction still does work very well, even if it doesn't have the precise focal length dialed in. I suppose that to make the DIPS happy they could put a multiplication factor option into the SR setup function, but my own cursory experience with TCs and SR indicates it isn't necessary. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
- Original Message - From: Paul Stenquist Subject: Re: Anyone using a Bigma 50-500.. With the M2004 and the A2X-S converter you can dial in 400mm shake reduction when you turn the camera on. I have dialed in 800mm (the max) when using the A400/5.6 with the A2X-S. This is true, but I was testing for less than ideal conditions to see how well SR worked with wrong information. As an example, if you have a lens that transmits focal length data, then there is no method for overriding the focal length to the corrected one if you use a teleconverter which also tranmits the data. This doesn't affect Pentax equipment (unless the AF converter transmits FL data, does anyone know if it does?). A series teleconverters don't transmit focal length from lens to camera (I just tried). -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
Hi I've had less than favourable results myself, I found it better to switch off and find some way of steadying the lens. regards, John On Sun, 11 May 2008 13:16:18 +0200, Tim Ãsleby wrote I don't think you need to switch SR of in those situations. TC makes SR less effective, but it still does a rather good job. I haven't tested it out really, but this is what my instincts tells me. MaritimTim 2008/5/10 John Whittingham [EMAIL PROTECTED]: Hi Patrick Yes it's a great lens by all accounts, I was considering A Sigma 400/5.6 APO Tele Macro (s/h) and 1.4x 2x EX converters but I'm back to my SR problems with converters. I'm thinking of forgetting the SR problem and getting myself a lighter tripod to carry, then whenever I need to use a TC for extra reach I'll tripod mount and switch SR off Regards, John -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
On Sun, 11 May 2008 11:07:53 -0600, William Robb wrote This doesn't affect Pentax equipment (unless the AF converter transmits FL data, does anyone know if it does?). Both the Sigma EX teleconverters do transmit the lens FL, as do the Kenko (Teleplus) SHQ 1.5x, 1.7x and 2x converters I have, yes I know I've got a shed full of TC's. Please don't tell the lens police, they wouldn't understand 8) John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
- Original Message - From: John Whittingham Subject: Re: Anyone using a Bigma 50-500.. On Sun, 11 May 2008 11:07:53 -0600, William Robb wrote This doesn't affect Pentax equipment (unless the AF converter transmits FL data, does anyone know if it does?). Both the Sigma EX teleconverters do transmit the lens FL, as do the Kenko (Teleplus) SHQ 1.5x, 1.7x and 2x converters I have, yes I know I've got a shed full of TC's. Please don't tell the lens police, they wouldn't understand 8) Let me expand somewhat on this thought. This doesn't affect Pentax equipment, except when used with faulty third party accessories. Unless. like the guys on DIPS, you hold them responsible for not reverse engineering their equipement after the fact to fix the reverse engineering failures of the third party manufacturers. Gee, I might have to cross post this concept.. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
On Sun, May 11, 2008 at 2:56 PM, William Robb [EMAIL PROTECTED] wrote: - Original Message - From: John Whittingham Subject: Re: Anyone using a Bigma 50-500.. On Sun, 11 May 2008 11:07:53 -0600, William Robb wrote This doesn't affect Pentax equipment (unless the AF converter transmits FL data, does anyone know if it does?). Both the Sigma EX teleconverters do transmit the lens FL, as do the Kenko (Teleplus) SHQ 1.5x, 1.7x and 2x converters I have, yes I know I've got a shed full of TC's. Please don't tell the lens police, they wouldn't understand 8) Let me expand somewhat on this thought. This doesn't affect Pentax equipment, except when used with faulty third party accessories. Unless. like the guys on DIPS, you hold them responsible for not reverse engineering their equipement after the fact to fix the reverse engineering failures of the third party manufacturers. Gee, I might have to cross post this concept.. William Robb Not faulty per se, but accessories that only provide pass-thru for the lens/body communication (unlike AF TC's from Nikon, Canon and Sony/Minolta which do communicate with the body as well as providing lens/body communication, but then again, those brands have provided 1st party support for those features). -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
For Pentax autofocus to work the TC's have to have to transmit the FL. The TC's in fact simply pass data on the digital pin straight from the camera to the lens and vice versa. To do other wise would require the TC to make changes to the data stream, and frankly I don't think they're that smart, I doubt that any of them have any processing power at all, (except for the Pentax AF 1.7x adapter, which has about the same processing power as an F zoom lens, which is to say almost none). The ability to parse the Digital Data being passed from the lens to the camera find the correct bits carrying the aperture adjustment information and modify to account for the TC is well beyond what was necessary for the system to work, and would certainly add to the manufacturing cost. John Whittingham wrote: On Sun, 11 May 2008 11:07:53 -0600, William Robb wrote This doesn't affect Pentax equipment (unless the AF converter transmits FL data, does anyone know if it does?). Both the Sigma EX teleconverters do transmit the lens FL, as do the Kenko (Teleplus) SHQ 1.5x, 1.7x and 2x converters I have, yes I know I've got a shed full of TC's. Please don't tell the lens police, they wouldn't understand 8) John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- Vote for Cthulhu. Why settle for a lesser evil... -- Dr. Jerry Pournelle -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
Hi Patrick Yes it's a great lens by all accounts, I was considering A Sigma 400/5.6 APO Tele Macro (s/h) and 1.4x 2x EX converters but I'm back to my SR problems with converters. I'm thinking of forgetting the SR problem and getting myself a lighter tripod to carry, then whenever I need to use a TC for extra reach I'll tripod mount and switch SR off Regards, John On Sat, 10 May 2008 00:36:42 +0200, Patrick Genovese wrote One other combo you might want to look at is the 100-300 f/4 + 1.4x tc That gets you to 420mm at 5.6 and the 100-300 is very highly regarded.. The only downside of that is that the K10D does not seem to be aware that a TC is in use and hence the SR system's performance is not as good as it should be coz it is correcting for a shorter focal length. Regards Patrick On Thu, May 8, 2008 at 12:34 PM, John Whittingham [EMAIL PROTECTED] wrote: On Thu, 8 May 2008 11:02:54 +0200, Patrick Genovese wrote To be honest I had the same concern prior to buying the lens but as it turns out the zoom mechanism is very smooth and is well damped to permit smooth control.. So is the AF .. it has a focus clutch for MF that damps the af ring very nicely. The only down side of the extending zoom is that it shifts the balance slightly although this is not a major concern. I found that the damping on my manfrotto 393 handles this shift in balance well enough that i can let go of the camera/lens combo in any zoom position and the camera will stay put where i leave it. The lens also features a zoom lock that prevents the lens from extending when being carried. Bottom line ... in real life i don't find that the extending zoom is an issue. Thanks Patrick, that's reassuring to know. I was thinking of trying to find a Sigma 400 f/5.6 APO Tele Macro to go with the 70-200/2.8 EX and 300/4 APO but considering the weight I'd be carrying and the problems I have with teleconverters the Bigma is looking like a better solution. In reality the Sigma 300-800 would be great but funds won't allow. My only peeve with the lens (and all sigma ex lenses) is that the lovely sigma EX finish tends to scuff quite easily. Yes I've experienced that too. regards Patrick Regards, John -- -- The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- -- -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Regards Patrick Genovese -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. John Whittingham Technician The
Re: Anyone using a Bigma 50-500..................
One other combo you might want to look at is the 100-300 f/4 + 1.4x tc That gets you to 420mm at 5.6 and the 100-300 is very highly regarded.. The only downside of that is that the K10D does not seem to be aware that a TC is in use and hence the SR system's performance is not as good as it should be coz it is correcting for a shorter focal length. Regards Patrick On Thu, May 8, 2008 at 12:34 PM, John Whittingham [EMAIL PROTECTED] wrote: On Thu, 8 May 2008 11:02:54 +0200, Patrick Genovese wrote To be honest I had the same concern prior to buying the lens but as it turns out the zoom mechanism is very smooth and is well damped to permit smooth control.. So is the AF .. it has a focus clutch for MF that damps the af ring very nicely. The only down side of the extending zoom is that it shifts the balance slightly although this is not a major concern. I found that the damping on my manfrotto 393 handles this shift in balance well enough that i can let go of the camera/lens combo in any zoom position and the camera will stay put where i leave it. The lens also features a zoom lock that prevents the lens from extending when being carried. Bottom line ... in real life i don't find that the extending zoom is an issue. Thanks Patrick, that's reassuring to know. I was thinking of trying to find a Sigma 400 f/5.6 APO Tele Macro to go with the 70-200/2.8 EX and 300/4 APO but considering the weight I'd be carrying and the problems I have with teleconverters the Bigma is looking like a better solution. In reality the Sigma 300-800 would be great but funds won't allow. My only peeve with the lens (and all sigma ex lenses) is that the lovely sigma EX finish tends to scuff quite easily. Yes I've experienced that too. regards Patrick Regards, John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Regards Patrick Genovese -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
I have the bigma and ... 1. Does SR work effectively? Yes but not as effectively as at the short end.. I estimate the effectiveness at the long end (above 300mm) to be around 1 - 1 1/2 stops. 2. Is the lens type displayed correctly in the EXIF i.e. Sigma 50-500 EX? No ACR just says sigma 3. Aprroximate aperture when zoomed at 300mm f/4, f/4.5, f/5.6? IIRC its somewhere around 5.6 4. Does the lens extend when zoomed? Yes 5. Does the front element rotate when focusing? No One thing to note about the Bigma is that it is have so a good tripod/head is almost a must. I use a manfrotto 055pro + a manfrotto 393 gimbal head the combo works very well. Hand-held shots are not out of the question but your hit rate will take a hit. :-) The weight also means that handleld shoots tend to be short in duration. In good light the af is reasonably fast and accurate (at least on my K10D). Regards Patrick -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
Hi Patrick Thanks for the reply, very much appreciated. I think the only thing putting me off is the lens extending when zoomed, it's the main reason why I sold the 135-400 I had. Having said that it does keep the size down when transporting the lens in a camera bag. One last question, if I may, is the zoom control overly stiff in operation? (it was on the 135-400 but that isn't/wasn't an EX lens) Regards, John On Thu, 8 May 2008 09:01:25 +0200, Patrick Genovese wrote I have the bigma and ... 1. Does SR work effectively? Yes but not as effectively as at the short end.. I estimate the effectiveness at the long end (above 300mm) to be around 1 - 1 1/2 stops. 2. Is the lens type displayed correctly in the EXIF i.e. Sigma 50-500 EX? No ACR just says sigma 3. Aprroximate aperture when zoomed at 300mm f/4, f/4.5, f/5.6? IIRC its somewhere around 5.6 4. Does the lens extend when zoomed? Yes 5. Does the front element rotate when focusing? No One thing to note about the Bigma is that it is have so a good tripod/head is almost a must. I use a manfrotto 055pro + a manfrotto 393 gimbal head the combo works very well. Hand-held shots are not out of the question but your hit rate will take a hit. :-) The weight also means that handleld shoots tend to be short in duration. In good light the af is reasonably fast and accurate (at least on my K10D). Regards Patrick -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
From: David Savage [EMAIL PROTECTED] Date: 2008/05/07 Wed PM 03:47:49 GMT To: Pentax-Discuss Mail List pdml@pdml.net Subject: Re: Anyone using a Bigma 50-500.. On an unrelated note, John you really should think about deleting the Carmel College legalese on your PDML messages. That stuff is archived I don't know how your employers feel about private correspondence on company email, but my boss would pitch a fit if I did that he found out. You are assuming that managers in the British education system have any comptetence. In my experience, that is a very big mistake. :-D Cheers, Dave 2008/5/7 John Whittingham [EMAIL PROTECTED]: on a K10D or K20D, could you please advise on the following: 1. Does SR work effectively? 2. Is the lens type displayed correctly in the EXIF i.e. Sigma 50-500 EX? 3. Aprroximate aperture when zoomed at 300mm f/4, f/4.5, f/5.6? 4. Does the lens extend when zoomed? 5. Does the front element rotate when focusing? Any comments on performance/sample images much appreciated. I think summer arrived in the UK yesterday 8) John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Email sent from www.virginmedia.com/email Virus-checked using McAfee(R) Software and scanned for spam -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
To be honest I had the same concern prior to buying the lens but as it turns out the zoom mechanism is very smooth and is well damped to permit smooth control.. So is the AF .. it has a focus clutch for MF that damps the af ring very nicely. The only down side of the extending zoom is that it shifts the balance slightly although this is not a major concern. I found that the damping on my manfrotto 393 handles this shift in balance well enough that i can let go of the camera/lens combo in any zoom position and the camera will stay put where i leave it. The lens also features a zoom lock that prevents the lens from extending when being carried. Bottom line ... in real life i don't find that the extending zoom is an issue. My only peeve with the lens (and all sigma ex lenses) is that the lovely sigma EX finish tends to scuff quite easily. regards Patrick On Thu, May 8, 2008 at 9:58 AM, John Whittingham [EMAIL PROTECTED] wrote: Hi Patrick Thanks for the reply, very much appreciated. I think the only thing putting me off is the lens extending when zoomed, it's the main reason why I sold the 135-400 I had. Having said that it does keep the size down when transporting the lens in a camera bag. One last question, if I may, is the zoom control overly stiff in operation? (it was on the 135-400 but that isn't/wasn't an EX lens) Regards, John On Thu, 8 May 2008 09:01:25 +0200, Patrick Genovese wrote I have the bigma and ... 1. Does SR work effectively? Yes but not as effectively as at the short end.. I estimate the effectiveness at the long end (above 300mm) to be around 1 - 1 1/2 stops. 2. Is the lens type displayed correctly in the EXIF i.e. Sigma 50-500 EX? No ACR just says sigma 3. Aprroximate aperture when zoomed at 300mm f/4, f/4.5, f/5.6? IIRC its somewhere around 5.6 4. Does the lens extend when zoomed? Yes 5. Does the front element rotate when focusing? No One thing to note about the Bigma is that it is have so a good tripod/head is almost a must. I use a manfrotto 055pro + a manfrotto 393 gimbal head the combo works very well. Hand-held shots are not out of the question but your hit rate will take a hit. :-) The weight also means that handleld shoots tend to be short in duration. In good light the af is reasonably fast and accurate (at least on my K10D). Regards Patrick -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Regards Patrick Genovese -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
LOL John On Thu, 8 May 2008 8:23:38 +, mike wilson wrote From: David Savage [EMAIL PROTECTED] Date: 2008/05/07 Wed PM 03:47:49 GMT To: Pentax-Discuss Mail List pdml@pdml.net Subject: Re: Anyone using a Bigma 50-500.. On an unrelated note, John you really should think about deleting the Carmel College legalese on your PDML messages. That stuff is archived I don't know how your employers feel about private correspondence on company email, but my boss would pitch a fit if I did that he found out. You are assuming that managers in the British education system have any comptetence. In my experience, that is a very big mistake. :-D Cheers, Dave 2008/5/7 John Whittingham [EMAIL PROTECTED]: on a K10D or K20D, could you please advise on the following: 1. Does SR work effectively? 2. Is the lens type displayed correctly in the EXIF i.e. Sigma 50-500 EX? 3. Aprroximate aperture when zoomed at 300mm f/4, f/4.5, f/5.6? 4. Does the lens extend when zoomed? 5. Does the front element rotate when focusing? Any comments on performance/sample images much appreciated. I think summer arrived in the UK yesterday 8) John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
On Thu, 8 May 2008 11:02:54 +0200, Patrick Genovese wrote To be honest I had the same concern prior to buying the lens but as it turns out the zoom mechanism is very smooth and is well damped to permit smooth control.. So is the AF .. it has a focus clutch for MF that damps the af ring very nicely. The only down side of the extending zoom is that it shifts the balance slightly although this is not a major concern. I found that the damping on my manfrotto 393 handles this shift in balance well enough that i can let go of the camera/lens combo in any zoom position and the camera will stay put where i leave it. The lens also features a zoom lock that prevents the lens from extending when being carried. Bottom line ... in real life i don't find that the extending zoom is an issue. Thanks Patrick, that's reassuring to know. I was thinking of trying to find a Sigma 400 f/5.6 APO Tele Macro to go with the 70-200/2.8 EX and 300/4 APO but considering the weight I'd be carrying and the problems I have with teleconverters the Bigma is looking like a better solution. In reality the Sigma 300-800 would be great but funds won't allow. My only peeve with the lens (and all sigma ex lenses) is that the lovely sigma EX finish tends to scuff quite easily. Yes I've experienced that too. regards Patrick Regards, John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
RE: Anyone using a Bigma 50-500..................
comptetence ? On an unrelated note, John you really should think about deleting the Carmel College legalese on your PDML messages. That stuff is archived I don't know how your employers feel about private correspondence on company email, but my boss would pitch a fit if I did that he found out. You are assuming that managers in the British education system have any comptetence. In my experience, that is a very big mistake. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
RE: Anyone using a Bigma 50-500..................
Able to find their own backside (fanny) using both hands = 0 On Thu, 8 May 2008 20:17:34 +0100, Bob W wrote comptetence ? On an unrelated note, John you really should think about deleting the Carmel College legalese on your PDML messages. That stuff is archived I don't know how your employers feel about private correspondence on company email, but my boss would pitch a fit if I did that he found out. You are assuming that managers in the British education system have any comptetence. In my experience, that is a very big mistake. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. John Whittingham Technician The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: RE: Anyone using a Bigma 50-500..................
indede. From: Bob W [EMAIL PROTECTED] Date: 2008/05/08 Thu PM 07:17:34 GMT To: 'Pentax-Discuss Mail List' pdml@pdml.net Subject: RE: Anyone using a Bigma 50-500.. comptetence ? On an unrelated note, John you really should think about deleting the Carmel College legalese on your PDML messages. That stuff is archived I don't know how your employers feel about private correspondence on company email, but my boss would pitch a fit if I did that he found out. You are assuming that managers in the British education system have any comptetence. In my experience, that is a very big mistake. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Email sent from www.virginmedia.com/email Virus-checked using McAfee(R) Software and scanned for spam -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Anyone using a Bigma 50-500..................
on a K10D or K20D, could you please advise on the following: 1. Does SR work effectively? 2. Is the lens type displayed correctly in the EXIF i.e. Sigma 50-500 EX? 3. Aprroximate aperture when zoomed at 300mm f/4, f/4.5, f/5.6? 4. Does the lens extend when zoomed? 5. Does the front element rotate when focusing? Any comments on performance/sample images much appreciated. I think summer arrived in the UK yesterday 8) John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
John, check over at dpreview. There are several satisfied users there. Joe -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
On an unrelated note, John you really should think about deleting the Carmel College legalese on your PDML messages. That stuff is archived I don't know how your employers feel about private correspondence on company email, but my boss would pitch a fit if I did that he found out. :-D Cheers, Dave 2008/5/7 John Whittingham [EMAIL PROTECTED]: on a K10D or K20D, could you please advise on the following: 1. Does SR work effectively? 2. Is the lens type displayed correctly in the EXIF i.e. Sigma 50-500 EX? 3. Aprroximate aperture when zoomed at 300mm f/4, f/4.5, f/5.6? 4. Does the lens extend when zoomed? 5. Does the front element rotate when focusing? Any comments on performance/sample images much appreciated. I think summer arrived in the UK yesterday 8) John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
- Original Message - From: David Savage Subject: Re: Anyone using a Bigma 50-500.. On an unrelated note, John you really should think about deleting the Carmel College legalese on your PDML messages. Curiousity question: How binding are these legalese things on the recipient if the recipient is the wrong person? I have seen these things threatening all sorts of dire consequences if the (incorrect) recipient retransmits the emails they are attached to. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
William Robb wrote: - Original Message - From: David Savage Subject: Re: Anyone using a Bigma 50-500.. On an unrelated note, John you really should think about deleting the Carmel College legalese on your PDML messages. Curiousity question: How binding are these legalese things on the recipient if the recipient is the wrong person? I have seen these things threatening all sorts of dire consequences if the (incorrect) recipient retransmits the emails they are attached to. They aren't binding at all. I expect they're just put on for intimidation factor (though I don't know who'd be intimidated). -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
- Original Message - From: Mark Roberts Subject: Re: Anyone using a Bigma 50-500.. They aren't binding at all. I expect they're just put on for intimidation factor (though I don't know who'd be intimidated). Probably the same people who watch out for the program police every time one of them performs an illegal operation and closes down. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
Thanks Joe, I will do, I just thought I'd ask you guys first. Regards, John On Wed, 07 May 2008 09:24:39 -0600, Joseph Tainter wrote John, check over at dpreview. There are several satisfied users there. Joe -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. John Whittingham Technician The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
I do on replies when I remember, it's generated automatically otherwise. The IT manager is a personal friend, so no worries there! Regards, John On Wed, 7 May 2008 23:47:49 +0800, David Savage wrote On an unrelated note, John you really should think about deleting the Carmel College legalese on your PDML messages. That stuff is archived I don't know how your employers feel about private correspondence on company email, but my boss would pitch a fit if I did that he found out. :-D Cheers, Dave 2008/5/7 John Whittingham [EMAIL PROTECTED]: on a K10D or K20D, could you please advise on the following: 1. Does SR work effectively? 2. Is the lens type displayed correctly in the EXIF i.e. Sigma 50-500 EX? 3. Aprroximate aperture when zoomed at 300mm f/4, f/4.5, f/5.6? 4. Does the lens extend when zoomed? 5. Does the front element rotate when focusing? Any comments on performance/sample images much appreciated. I think summer arrived in the UK yesterday 8) John The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
LOL John On Wed, 7 May 2008 10:28:24 -0600, William Robb wrote - Original Message - From: Mark Roberts Subject: Re: Anyone using a Bigma 50-500.. They aren't binding at all. I expect they're just put on for intimidation factor (though I don't know who'd be intimidated). Probably the same people who watch out for the program police every time one of them performs an illegal operation and closes down. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
Joseph Tainter wrote: John, check over at dpreview. There are several satisfied users there. Joe sorry, can't get past the idea that there are any satisfied users of anything at dpreview. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
Doug Brewer wrote: Joseph Tainter wrote: John, check over at dpreview. There are several satisfied users there. sorry, can't get past the idea that there are any satisfied users of anything at dpreview. So you're telling us that you're not satisfied with the Pentax forum at DP Review? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Anyone using a Bigma 50-500..................
Doug Brewer wrote: Joseph Tainter wrote: John, check over at dpreview. There are several satisfied users there. Joe sorry, can't get past the idea that there are any satisfied users of anything at dpreview. There have to be exceptions to every rule. -- Vote for Cthulhu. Why settle for a lesser evil... -- Dr. Jerry Pournelle -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
