K7, K20 and AF
Posted 22/11/2009 - 03:15
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Kudos for taking the time and effort!!
[i]Bodies: 1x K-5IIs, 2x K-5, Sony TX-5, Nokia 808
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Posted 22/11/2009 - 13:17
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Wow!!!
Thanks for the effort you have put into it.
I don't use AF-C very much, but when I use it on my K20D I do get the feeling that it is very slugish, that said I haven't used a Nikon or Canon to see/feel the difference.
Low light performance is something I run into some times, but mostly I put the flash unit on the camera and if I don't use the flash itself I use the spot beam of the flash unit.
Thanks for the effort you have put into it.
I don't use AF-C very much, but when I use it on my K20D I do get the feeling that it is very slugish, that said I haven't used a Nikon or Canon to see/feel the difference.
Low light performance is something I run into some times, but mostly I put the flash unit on the camera and if I don't use the flash itself I use the spot beam of the flash unit.
Camera:K20D|Ist*DS|Spotmatic II|MZ-10
Pentax Lenses: DA16-45|DA50-200|50A 1.7
Tamron Lenses: 28-200
Takumar Lenses: SMC 55 1.8
Sigma Lenses: EX DG 50-500 'Bigma'|EX 50mm Macro
Flashes: Metz 58 AF-1|Samsung SEF-36PZF|Pentax AF-220T
Pentax Lenses: DA16-45|DA50-200|50A 1.7
Tamron Lenses: 28-200
Takumar Lenses: SMC 55 1.8
Sigma Lenses: EX DG 50-500 'Bigma'|EX 50mm Macro
Flashes: Metz 58 AF-1|Samsung SEF-36PZF|Pentax AF-220T
Posted 22/11/2009 - 15:54
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Thanks, a lot of work and most interesting.
Greg
One day I'll own a K7
Greg
One day I'll own a K7
Posted 26/11/2009 - 21:46
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Superb effort.
This subject is something I have raised in the past.
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I take shots at local running events and the hit rate drops off considerably the closer they get. Panning no problem. Moving away no problem. Closing in not good at all.
Use K10-50-135 SDM-centre focus point-AF-C. Sometimes go manual pre focus both eyes open and fire just before. Does require practice.
Think I may have read somewhere the manufacturers are trying to develop predictive focusing. For these very reasons.
Bought the SDM hoping it would improve the hit rate. It did not. Smooth and quiet and cracking when you get one. But the problem seems to lie with the AF system. And reading above does not inspire me to rush and buy a K7.
Heres one I prepared earlier. Pre sdm. Taken with Sigma 70-200 2.8
link Scroll down to Johnson (4th main pic) that was on of mine.
This subject is something I have raised in the past.
link
I take shots at local running events and the hit rate drops off considerably the closer they get. Panning no problem. Moving away no problem. Closing in not good at all.
Use K10-50-135 SDM-centre focus point-AF-C. Sometimes go manual pre focus both eyes open and fire just before. Does require practice.
Think I may have read somewhere the manufacturers are trying to develop predictive focusing. For these very reasons.
Bought the SDM hoping it would improve the hit rate. It did not. Smooth and quiet and cracking when you get one. But the problem seems to lie with the AF system. And reading above does not inspire me to rush and buy a K7.
Heres one I prepared earlier. Pre sdm. Taken with Sigma 70-200 2.8
link Scroll down to Johnson (4th main pic) that was on of mine.
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Regards