HerbChong Offline Dedicated FM Upload & Sell: On
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my *istD, K10D, K20D, and K7 are typical of every one else's. Pentax users put up with things in their bodies that Nikon users would throw them in the river if it happened to them. Pentax is the only company who still has to have their cameras double check focus when the lens stops moving because they still don't monitor focus while the lens is in motion. every other current DSLR manufacturer knows how.
my K10D, K20D, and K7 with calibrated focus for each lens misses focus on the really fast lenses all the time. half an inch front or back with a 77/1.8 wide open and the capture is wasted. stop down to f2.8 and DOF covers up the focus inaccuracies. since the cameras front and back focus about equally, it is not a calibration issue but purely accuracy. i've had multiple instances of the K10D and they all do the same thing. talk to some K20D and K7D owners who are willing to be candid and they admit the same.
shooting with my D3 or D3X, i have no trouble throwing away all my portraits where i can't count the eyelashes or see that the iris pattern is in sharp focus. that's maybe 5% of the time with the 85/1.4 or 50/1.4 wide open when i am shooting moving models. with my K7, which arguably has the best AF of all Pentax bodies, shooting the DA* 55/1.4 leads to 20-30% slightly OOF unless i stop moving and make the model hold still and also work only in bright light.
as for the lenses, there is a reason i own two complete sets of FA Limiteds and a near complete set of DA ones.
Herb...
Tincam wrote:
You must have had pretty bad luck with Pentax bodies. I've owned a K10D & a K20D. I found the autofocus to be very accurate, especially on the K20D. The camera seemed to double check focus somehow. It was painfully slow, but usually very accurate. No less accurate than my D700 is. I agree with your statement on metering though. The bodies I had were unpredictable at times.
You're right about the lenses. When I look at photos I made with the 31/1.8 it still drops my jaw.
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