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12-30-2010, 03:27 PM   #1
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Pentax-M 80-200mm zoom won't stay zoomed.

I have an old Pentax-M 80-200mm zoom. It rotates to focus and pulls in and out to zoom. The glass is great and the aperture blades fine. The problem is, it won't stay where I put it. If I pull it out (to zoom out), and then tilt the camera up at an angle, the lens falls back down to 80mm. If I tilt it downward the lens will move all the way out to 200mm. Is there any way to adjust the friction so it will stay where I put it? Thanks.


12-30-2010, 03:49 PM   #2
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a rubberband around the barrel might help hold it from sliding back but would be bothersome if you need to zoom on the fly. Not sure about keeping it from sliding forward. I have a 70-200 macro tak that does the same thing.
12-30-2010, 04:22 PM   #3
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Some zooms have screws hidden under the rubber focus grip that can be tightened for less creep.
12-30-2010, 05:49 PM   #4
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In the mean time, a wide rubber band overlapping the zoom ring/barrel intersection will provide some friction .


Last edited by pacerr; 12-30-2010 at 07:55 PM.

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