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Forum: Pentax Lens Articles
06-12-2012, 11:34 AM
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This just means someone opened up the lens for unknown repair and during the process, managed to lose either the detent spring or the ball. Define 'spin freely': There is no detent stops so the aperture ring turns without clicking at half stop marks or does it literally turn if you happen to breathe on the lens or shake or tilt the lens?
I don't think the aperture actuator can affect the movement of the diaphragm, the detent stops are for the user's convenience to mentally keep track of the aperture value used for a particular shot. You will be shooting in M mode, pressing the green button to meter - with the detent ball or spring missing, you have infinite diaphragm control instead of mere half stop increment. :)
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