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11-19-2015, 07:37 PM   #1
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K-3 II focus problem

Deal all,

Good morning everyone. A newcomer to here. I have a really confusing issue after I bought K-3 II six weeks ago. I have an old A* 200mm F2.8 . It takes great image putting on my K-5IIs, but recently I found it doesn't work with K-3II. The infinite side of the image is always blurring. Here is some sample with same processing date thru cameraraw.

I can show you many more images with different lens. It has the same problems. I took my K-3II to official distributor in Taiwan. They were also confused with it.

Anyone has same problem? Your reply is appreciated.

Jeremy Chou from Taiwan

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11-19-2015, 07:54 PM   #2
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When shooting, try magnifying the image in live view until correct focus is obtained. The infinity mark on the camera will not always correspond to true infinity.

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11-19-2015, 09:05 PM   #3
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Do other lenses also do this? If so the mount distance may be out of spec or close to out of spec. If too long your infinity focus won't be available. Have they tested the body with a known good lens?
11-20-2015, 05:07 AM   #4
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Is it a FA*200/2.8? Lens mount might be a bit loose-try to screw it tighter. Does this happen when you close it down a bit for example F5.6?


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