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11-10-2009, 11:11 AM   #1
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Back focusing AF lens an issue on MF film bodies?

My FA35 has a pretty serious case of back focusing.
It needs +10 adjustment on my K20D.

Could this be an issue with a MF film body?

11-10-2009, 12:30 PM   #2
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I don't see how, since you adjust the focus yourself on a MF film cam
11-10-2009, 12:37 PM   #3
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What he said...

I assume that you're talking about AF 35mm bodies though. In which case, I don't know the answer to that question.
11-10-2009, 01:21 PM   #4
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QuoteOriginally posted by keyser Quote
What he said...

I assume that you're talking about AF 35mm bodies though. In which case, I don't know the answer to that question.
My film body is a superA, MF.

When looking through the viewfinder of the K20D the lens looked to be focusing ok. I assumed it would be ok on an MF film body but had me doubts as I've yet to develop any film shot with the lens.

11-10-2009, 02:40 PM   #5
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QuoteOriginally posted by RichyX Quote
My film body is a superA, MF.

When looking through the viewfinder of the K20D the lens looked to be focusing ok. I assumed it would be ok on an MF film body but had me doubts as I've yet to develop any film shot with the lens.
In that case it really is what he said. Trust your eyes, as what you see in your viewfinder will match what gets put down on film.

I've never had any problems focussing AF lenses on a MF camera.
11-10-2009, 10:50 PM   #6
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AF adjustment on AF cameras and manual focus are completely separate issues.
If other lenses manually focus properly, then any lens that is capable of achieving focus will work properly.
11-11-2009, 01:38 PM   #7
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QuoteOriginally posted by RichyX Quote
My film body is a superA, MF.

When looking through the viewfinder of the K20D the lens looked to be focusing ok. I assumed it would be ok on an MF film body but had me doubts as I've yet to develop any film shot with the lens.
Remember when using K20, to have the diopter set to neutral. Else it can happen that what the camera thinks is focus, might not look it in the VF.

One of my pet peeves with Pentax, is that the diopter selecter doesn't lock tightly in the neutral position, as some other brands do.
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