Question about Quantaray 28-90mm f/3.5-5.6 for Pentax

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Quantaray 28-90 for Nikon N65 zoom ring locked up

All of the sudden the zoom ring on my AF Quantaray 28-90 won't turn. The AF feature seems to be working just fine and I can manual focus too, but the zoom ring is stuck at about 48mm and I can't adjust the zoom feature either out or in. Any one know of a secret locking switch or fix for this? Thanks.

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Re: Quantaray 28-90 for Nikon N65 zoom ring locked up

There is no secret locking switch. If a little gentle jiggling doesn't free the zoom ring, then I can only suggest you take it in to a reputable camera shop for a Clean-Lubricate-Adjust (CLA).

Posted on Jan 24, 2010

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The lowest setting is the highest number; f22 is lower than f4. It's little counter-intuitive, but the lowest setting means the least amount of light - or the smallest aperture opening - not the numerical "f" value of the opening.

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Slide a piece of paper partway under the ring (make sure you leave enough hanging out so you can remove it later) and see if that tightens the action some.

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Flashing letters in lens

Turn the aperture ring on the lens to its smallest aperture (largest f/number) and lock it there if it has a lock. You control the aperture through the command dial on the camera body, not the aperture ring on the lens.

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