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02-07-2019, 12:12 PM   #1
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Newly purchased a 645 A 150/ 3,5 lens and does not focus

Just purchased it and tried to get image in focus. I turned the lens focus barrel all the way right and left and it does not focus . Blurry. Is it the lens? Is there any settings the camera that I have to do to use the MF lens? Thanks Dennis
I am using 645D

---------- Post added 02-07-19 at 02:43 PM ----------

I believe its the lens. I move the focus side to side and it seems to slip sometimes. I will return it Thank you

02-07-2019, 01:18 PM   #2
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Hi Dennis, I think you're right - it's the lens. Without even turning on the 645D, you should be able to see the focus change in the viewfinder as you turn the focus ring. I don't believe there are any settings in the camera body that you need to adjust to allow the lens to manually focus properly. Good luck.
02-07-2019, 03:53 PM   #3
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Original Poster
Thank you Jon
03-23-2019, 10:27 AM   #4
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Pentax A 150 mm f/3.5 focusing issues.

The 645 A 150 mm f/3.5 is very solidly built. For the barrel not to move back and forth when the focusing ring is turned, it means the lens must have been heavily abused and must be in a terrible mechanical condition. 645 bodies don't have an AF/MF button, it's the AF lens prongs that activate the AF function on AF capable bodies (645N, N II, D and Z).

03-23-2019, 08:30 PM   #5
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Thank you Dennis

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