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05-10-2018, 03:26 PM   #1
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FA*24 Internal Focusing Wabble

Rear lens group of my FA24 wobbles and is quite loose. You can tell by pointing the rear of the lens down, then the focusing group would move a bit on its own toward the front if I put up on it using lenspen. At infinity focus, I noticed the IF group was quite loose. If I push against the rear glass then shake the lens, if I don't hear anything loose.


So practically speaking, the problem exhibits itself at infinity focus. If I tilt the lens down at infinity, the image is quite soft, but If I point the lens up at infinity, the image is very sharp. No issue at other focusing distance.



Can this be fixed? The center sharpness/contrast of the lens is otherwise very good even at F2.0.

05-11-2018, 11:11 AM   #2
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Since there's no entry for the FA* 24mm 2.0 here,
Pentax Lens Disassembly Database - PentaxForums.com
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here's a list of many Pentax Repair Facilities:
Pentax Repair Facilities (Wordwide listing) - PentaxForums.com

Otherwise i suggest contacting the user dcshooter.
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