Assume you already have set "Use Aperture Ring" to "Permitted."
Originally posted by mediaslinky I could have the lens on f22 and as soon as I twist it to mount, the aperture is forced wide open.
This is normal. The lens stays open until just before the actual exposure, the lens closes down to the set aperture, the shutter opens then closes, and then the lens open up again.
Also, what mode is the camera body at? If it is any mode other than "M," the PK lens will remain at full aperture, no matter what the aperture ring is set at.
So, please try it again:
- Verify that "Use Aperture Ring" is set to "Permitted."
- Set the camera to "M" mode.
- Set the aperture ring on the lens.
- Focus, hit the "Green" button (K10D or K20D, AE-L if the camera does not have a "Green" button), then release the shutter.