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02-10-2014, 08:51 PM   #1
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k-30 focus

I purchased a k-30 w/ 18-135 wr and a 55-300 pentax da lens and my photos seem to be not sharp. do I have to calibrate or use the af fine adjustment in camera.
?

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02-11-2014, 01:48 AM   #2
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It's hard to say if the softness is due to the typical performance of the lens itself, or other factors (such as a relatively slow shutter speed in the second shot). Can you post 100% crops and some more samples?

If the culprit is inaccurate focus, you can confirm by focusing via live view. If that yields a sharper result, here are the steps to correct front/back focus:
Fixing Front and Back Focus - Introduction - PentaxForums.com

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02-11-2014, 06:08 AM   #3
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QuoteOriginally posted by awesome 63 Quote
I purchased a k-30 w/ 18-135 wr and a 55-300 pentax da lens and my photos seem to be not sharp. do I have to calibrate or use the af fine adjustment in camera.
?
is there a aperture on the 55-300 da that will produce the best DOF. .I have started using is0 400 to eliminate slow shutter speed. I will use the AF adjustment to find the best setting . Thanks.
02-11-2014, 06:34 AM   #4
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Solving focusing issues by increasing DOF is not the way to go. f/32 or so will produce the deepest DOF. Not advisable though due to side effects. Your apertures (f/9 and f/10) should give good results.

I would follow Adam's advice and try live view first. If that's OK, it indicates that you need to apply the AF fine tuning. I would also advise to see if 260mm works better; lenses are usually not at their best at the extremes.

02-11-2014, 09:33 AM   #5
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QuoteOriginally posted by awesome 63 Quote
I purchased a k-30 w/ 18-135 wr and a 55-300 pentax da lens and my photos seem to be not sharp. do I have to calibrate or use the af fine adjustment in camera.
?
I also have trouble with the K-30 and the 18-135. Most pictures are quite soft. This seems to be the case with most AF lenses. My old 50 1.7 manual lens is super sharp in comparison. Please let us know if AF tuning or similar helps. I have tried it myself without success. Even sent the camera and lens for warranty service but got it back the same way.
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