Just to supplement what
jamonation said.
Originally posted by cardinal43 But, if I mount the adapter to the lens first, how do you know where to start screwing it to the lens, as there are no markings that I can see? Is this making sense?
It does not matter, there is just one thread so wherever you start, you'll always 'catch' the start of the thread and when you have tightened the lens it will be the right way up. As
jamonation says, it will be sightly off, but in a way that is beneficial. However, I do find that on my SMC 55/1.8 the A/M switch is just under the flash protuberance, making it a bit of a pain to switch.
Quote: I see there are 2 slots where it appears that I could put something in there to start turning it counter clock wise, but I'm not sure what I need to use. I definitely don't want to damage the adapter, or worse yet, damage the body.
Yup. Some people say use a finger nail. But some of us bite our nails or have soft nails, so that is not a good solution. I am leary about using something like a screw driver to unclip the little spring.
However, there is a solution. The first adapter I bought was a Kood adapter. This was a mistake initially because the screw on the spring came off while in the camera, jamming the adapter. Eventually, after some manipulation, I managed to get the adapter out and I threw away the spring and screw. Without the spring the Kood adapter is fine. I have that adapter tightly screwed on to my CZJ 35/2.4 making that a K mount.
But, here's the interesting bit. The Kood adapter comes with a metal tool (a bit like a lens spanner wrench) that fits into the slots in the adapter.
So, get a Kood adapter. The tool can be used with your Pentax adapter. The Kood adapter can be used as a back-up
but make sure that you remove the spring and screw.
Richard