Re: SAFOX VIII problems? Can *istD test it? (link)
Are the focussing problems occuring using all AF sensor points, or does it also happens if only one is used, for instance the central one? -- Frits Wüthrich [EMAIL PROTECTED]
Re: SAFOX VIII problems? Can *istD test it? (link)
Frits Wüthrich schrieb: Are the focussing problems occuring using all AF sensor points, or does it also happens if only one is used, for instance the central one? -- Frits Wüthrich [EMAIL PROTECTED] In the end, I concentrated my tests on the central sensor, but the outer ones have shown the problem also, but to a lesser degree. I am using spot-AF most of the time, multipoint-AF is evil ! ;-} Thomas
Re: SAFOX VIII problems? Can *istD test it? (link)
on 05.12.03 19:42, Rüdiger Neumann at [EMAIL PROTECTED] wrote: on dpreview is a long thread about the focus problem on fast lenses. http://forums.dpreview.com/forums/read.asp?forum=1028message=6551761 It is stated, that the AF is not correct for lenses like the FA 1.4/50, FA*1.4/85, FA*2.8/28-70 and so on for aperture values less than 4. Has anybody of the *istD user has also this problems.? Boz discriped a method to test it: http://forums.dpreview.com/forums/read.asp?forum=1028message=6702007 I'm a bit concerned, as I'm thinking of buying a *istD. I have a lot of fast lenses like the FA2/24, FA1.9/43, FA1.4/85 ... and I would like to use them wide open with AF. Hello Rüdiger, I've made some tests at home this weekend. I've used FA 100/2.8 macro and FA 35/2 - both wide open, *istD on tripod, halogen light, iso200. And for about 30 shots per lens at min. focusing distance and at about 1.5m, only two were misaligned about 2cm with FA 100/2.8. I've made a few shots focusing manually using matte only - these were worse misaligned (slightly front or back focussed) than the ones made using AF... And I have had perfect sight since I was born :-) My conclusion is: focusing problems with *istD are exaggerated, it is rather difficult to obtain better results during action manually focusing at shallow DOF, and if you want top focus on stationery object, than you have time to use MF anyway. Enjoy your cameras, taking all these great photos, until you want to eat your nails ;-) -- Best Regards Sylwek
RE: SAFOX VIII problems? Can *istD test it? (link)
The problems noted on dpreview actually relate to focus accuracy with distant objects, near infinity. Problems are said to be much more significant there than at closer distances. I used to be so bad at focusssing manually though, that any innacuracy would still be far better than my ability!! -Original Message- From: Sylwester Pietrzyk [mailto:[EMAIL PROTECTED] Hello Rüdiger, I've made some tests at home this weekend. I've used FA 100/2.8 macro and FA 35/2 - both wide open, *istD on tripod, halogen light, iso200. And for about 30 shots per lens at min. focusing distance and at about 1.5m, only two were misaligned about 2cm with FA 100/2.8. I've made a few shots focusing manually using matte only - these were worse misaligned (slightly front or back focussed) than the ones made using AF... And I have had perfect sight since I was born :-) My conclusion is: focusing problems with *istD are exaggerated, it is rather difficult to obtain better results during action manually focusing at shallow DOF, and if you want top focus on stationery object, than you have time to use MF anyway. Enjoy your cameras, taking all these great photos, until you want to eat your nails ;-) -- Best Regards Sylwek
Re: SAFOX VIII problems? Can *istD test it? (link)
on 08.12.03 13:57, Rob Brigham at [EMAIL PROTECTED] wrote: The problems noted on dpreview actually relate to focus accuracy with distant objects, near infinity. Problems are said to be much more significant there than at closer distances. Hmmm... I will test this issue too than, althought I do not shot usually at infinity with the lens wide open... So far I have noticed, that *istD set FA 24-90 right at infinity mark as it should, but I'll try it with FA 100/2.8 and 35/2 too. I used to be so bad at focusssing manually though, that any innacuracy would still be far better than my ability!! Yep, me too, especially when I have to set focus manually on even slowly moving subjects :-) And Safox VIII althought slightly slower at very low light levels than Safox VII in MZ-S, but above certain light levels it catches-on more easily on difficult subjects than its older brother. -- Best Regards Sylwek
Re: SAFOX VIII problems? Can *istD test it? (link)
snip My conclusion is: focusing problems with *istD are exaggerated, it is rather difficult to obtain better results during action manually focusing at shallow DOF, and if you want top focus on stationery object, than you have time to use MF anyway. Enjoy your cameras, taking all these great photos, until you want to eat your nails ;-) -- Best Regards Sylwek Hi Sylwek, you're drawing your conclusion based on your sample only. To me, it's an obvious quality-control problem. So please don't tell us, focusing problems with *istD are exaggerated, in fact they're worse than you might think! But it obviously differs from sample to sample - bet happy to have caught a lucky one ;-) Perhaps I'll try to put up a website with examples with in the next weeks... Thomas
Re: SAFOX VIII problems? Can *istD test it? (link)
- Original Message - From: Th. Stach Subject: Re: SAFOX VIII problems? Can *istD test it? (link) you're drawing your conclusion based on your sample only. To me, it's an obvious quality-control problem. So please don't tell us, focusing problems with *istD are exaggerated, in fact they're worse than you might think! But it obviously differs from sample to sample - bet happy to have caught a lucky one ;-) Around here, we have a rather derisive name for auto focus. Auto f*ck-up. It's not limited to Pentax equipment, all the manufacturers seem to have AF accuracy issues. OTOH, it's not a something I have much use for, and I tend to not use it. I learned to depend on my eye, not a machine for focusing, and I never made the transition to depending on the camera for focusing. William Robb
Re: SAFOX VIII problems? Can *istD test it? (link)
Hi! Bill, I think that what we're seeing know is what called among my kind - the bleeding edge. This is very first generation of Pentax __new__ AF system. I am fairly sure that what people are observing can be fixed in the program, not in hardware... I hope though that this is nothing more serious than that. It feels really good (even with my glasses) to snap in focus my 50 mm lens on my ME Super g. BOris
Re: SAFOX VIII problems? Can *istD test it? (link)
William Robb schrieb: - Original Message - From: Th. Stach Subject: Re: SAFOX VIII problems? Can *istD test it? (link) you're drawing your conclusion based on your sample only. To me, it's an obvious quality-control problem. So please don't tell us, focusing problems with *istD are exaggerated, in fact they're worse than you might think! But it obviously differs from sample to sample - bet happy to have caught a lucky one ;-) Around here, we have a rather derisive name for auto focus. Auto f*ck-up. It's not limited to Pentax equipment, all the manufacturers seem to have AF accuracy issues. OTOH, it's not a something I have much use for, and I tend to not use it. I learned to depend on my eye, not a machine for focusing, and I never made the transition to depending on the camera for focusing. William Robb *ROTFL*!!! auto-f... hehe, great! William, normally I'd say 100% ACK but the viewfinder of current DSLRs is like a view through a tunnel. Especially when you're changing back and forth with an LX! O... I always thought, the English expression viewfinder or in short finder, was way better and more positive than the German expression Sucher - which could be translated as seeker or searcher. So, for currend APS-size-sensored DSLRs the term comes quite close...manual focus is not easy at all with them. And still, I can do it better than my sample auto-does... Thomas
Re: SAFOX VIII problems? Can *istD test it? (link)
- Original Message - From: Boris Liberman Subject: Re: SAFOX VIII problems? Can *istD test it? (link) Hi! Bill, I think that what we're seeing know is what called among my kind - the bleeding edge. This is very first generation of Pentax __new__ AF system. I am fairly sure that what people are observing can be fixed in the program, not in hardware... I hope though that this is nothing more serious than that. I presume that Safox VIII is the 8th generation of autofocus from Pentax, William Robb
Re: SAFOX VIII problems? Can *istD test it? (link)
- Original Message - From: Th. Stach Subject: Re: SAFOX VIII problems? Can *istD test it? (link) *ROTFL*!!! auto-f... hehe, great! William, normally I'd say 100% ACK but the viewfinder of current DSLRs is like a view through a tunnel. Especially when you're changing back and forth with an LX! O... I always thought, the English expression viewfinder or in short finder, was way better and more positive than the German expression Sucher - which could be translated as seeker or searcher. So, for currend APS-size-sensored DSLRs the term comes quite close...manual focus is not easy at all with them. And still, I can do it better than my sample auto-does... Agreed about that. Unfortunately, this seems to be the way of the world. Of all the APS sensor sized DSLR's I have seen, the ist D seems to have the best one, but for sure, the LX is better. I would like to put a split image screen into my ist D, it looks like the screen may be removable, to improve manual focusing. I don't have many AF lenses, so this is important to me. William Robb
Re: SAFOX VIII problems? Can *istD test it? (link)
On Mon, 8 Dec 2003, William Robb wrote: Agreed about that. Unfortunately, this seems to be the way of the world. Of all the APS sensor sized DSLR's I have seen, the ist D seems to have the best one, but for sure, the LX is better. It is the downside of having a smaller sensor. Light is being collected and shown on the viewfinder from a smaller physical area. If the *ist D viewfinder was as large as the LX viewfinder it would be much dimmer. I personally find that the *ist D viewfinder works better for me as a glasses wearer than most 35mm SLR viewfinders. I know about diopter correction, but I don't like to remove my glasses when taking photographs. I would like to put a split image screen into my ist D, it looks like the screen may be removable, to improve manual focusing. I don't have many AF lenses, so this is important to me. I think that this would make the center AF point and the spot metering useless. That might be a reasonable tradeoff though. I wonder if a focus aid could be placed around the center spot which would help with using MF lenses and not disrupt the center AF and spot metering. alex
