Re: SDM snaffu
Thanks Mark. I have no issues with the focus when it works, its quite fast and the IQ is very good. Calling my salesman to see what can be done. Repair, replace, Sigma 17-70?? Dave On Mon, Apr 14, 2014 at 9:14 PM, Mark C pdml-m...@charter.net wrote: Sorry to hear about your problems with the 17-70. My sample of the lens has been consistently snappy and fast WRT focus speed. The more I use it, the more I like it. Here is a photo of my cat from a few days ago - plus a detail of his face. Handheld, no adjustments to the raw file in PS. http://www.markcassino.com/b2evolution/index.php/2014/04/14/dfa-17-70-sample?blog=9 Mark On 4/13/2014 7:08 PM, David J Brooks wrote: Took the new 17-70 out to shoot birds in my lilac tree today. First few shots focus snapped in there like no tomorrow. Then it started to acing up. It would hit focus then start hunting, but not a lot just a few mm either way but the green focus indicator would flash and would not let me take the shot. I would have to change focus points 1-2 3 times and then it would focus, then it would act up again. Im going to assume this is not normal or is the norm for SDM I hop not , its going back. Dave -- 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: SDM snaffu
Centre focus, lots of contrast so it shoudl be fine biut its not. What it feels like its doing is it will focus, then front focus then back focus then front focus then stop. I cannot shot as the focus ilight is flashing so no picture. its sporatic it will be fine for 2-3 shots then it will start. I'm going to send this back it think/ Dave On Sun, Apr 13, 2014 at 8:00 PM, Bruce Walker bruce.wal...@gmail.com wrote: Which focus point where you using, Dave? Lots of light and contrast in whatever was under the selected focus point? On Sun, Apr 13, 2014 at 7:08 PM, David J Brooks pentko...@gmail.com wrote: Took the new 17-70 out to shoot birds in my lilac tree today. First few shots focus snapped in there like no tomorrow. Then it started to acing up. It would hit focus then start hunting, but not a lot just a few mm either way but the green focus indicator would flash and would not let me take the shot. I would have to change focus points 1-2 3 times and then it would focus, then it would act up again. Im going to assume this is not normal or is the norm for SDM I hop not , its going back. Dave -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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. -- -bmw -- 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: SDM snaffu
On 14/04/2014, David J Brooks pentko...@gmail.com wrote: Took the new 17-70 out to shoot birds in my lilac tree today. First few shots focus snapped in there like no tomorrow. Then it started to acing up. It would hit focus then start hunting, but not a lot just a few mm either way but the green focus indicator would flash and would not let me take the shot. I would have to change focus points 1-2 3 times and then it would focus, then it would act up again. Im going to assume this is not normal or is the norm for SDM I hop not , its going back. If I bought an SDM lens that ceased to function, I would definitely be hopping. -- 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: SDM snaffu
Sorry to hear about your problems with the 17-70. My sample of the lens has been consistently snappy and fast WRT focus speed. The more I use it, the more I like it. Here is a photo of my cat from a few days ago - plus a detail of his face. Handheld, no adjustments to the raw file in PS. http://www.markcassino.com/b2evolution/index.php/2014/04/14/dfa-17-70-sample?blog=9 Mark On 4/13/2014 7:08 PM, David J Brooks wrote: Took the new 17-70 out to shoot birds in my lilac tree today. First few shots focus snapped in there like no tomorrow. Then it started to acing up. It would hit focus then start hunting, but not a lot just a few mm either way but the green focus indicator would flash and would not let me take the shot. I would have to change focus points 1-2 3 times and then it would focus, then it would act up again. Im going to assume this is not normal or is the norm for SDM I hop not , its going back. Dave -- 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.
SDM snaffu
Took the new 17-70 out to shoot birds in my lilac tree today. First few shots focus snapped in there like no tomorrow. Then it started to acing up. It would hit focus then start hunting, but not a lot just a few mm either way but the green focus indicator would flash and would not let me take the shot. I would have to change focus points 1-2 3 times and then it would focus, then it would act up again. Im going to assume this is not normal or is the norm for SDM I hop not , its going back. Dave -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: SDM snaffu
Which focus point where you using, Dave? Lots of light and contrast in whatever was under the selected focus point? On Sun, Apr 13, 2014 at 7:08 PM, David J Brooks pentko...@gmail.com wrote: Took the new 17-70 out to shoot birds in my lilac tree today. First few shots focus snapped in there like no tomorrow. Then it started to acing up. It would hit focus then start hunting, but not a lot just a few mm either way but the green focus indicator would flash and would not let me take the shot. I would have to change focus points 1-2 3 times and then it would focus, then it would act up again. Im going to assume this is not normal or is the norm for SDM I hop not , its going back. Dave -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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. -- -bmw -- 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: SDM snaffu
If there are leaves or branches between you and the subject, the camera/lens doesn't really know what you want. If there is a breeze, and said obstacles are moving, AND you do not have spot focusing on, the camera will hunt. Choosing action mode will do the same thing. Focusing looks for movement, such as a flying bird, vs a perching one. I spot focus on the subject, moving the spot to something stable at the same distance as the subject off center of the frame. This frees up my composition wishes instead of centering the subject. Worked wonders with the hummingbirds yesterday. Pentaxian On Apr 13, 2014, at 16:08 , David J Brooks wrote: Took the new 17-70 out to shoot birds in my lilac tree today. First few shots focus snapped in there like no tomorrow. Then it started to acing up. It would hit focus then start hunting, but not a lot just a few mm either way but the green focus indicator would flash and would not let me take the shot. I would have to change focus points 1-2 3 times and then it would focus, then it would act up again. Im going to assume this is not normal or is the norm for SDM I hop not , its going back. Dave -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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.
