M42/PK adapter

Started 11 months ago | Questions thread
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Sjak Senior Member • Posts: 3,317
M42/PK adapter

Currently, I use my K100D mostly with my M42-lenses.

I encounter one problem tough:

Many of these lenses have a pin, which when not engaged means the lens will remain wide open, regardless of the setting of the aperture ring.

Meanwhile I have 2 adapters which do not engage this pin. They are cheap and work well with the lenses without the pin. However, I am unable to find an adapter which does engage the pin and also still allows for infinity-focus. Probably I am looking in the wrong direction

I hope someone can point me in the right direction.

Any feedback is highly appreciated.

 Sjak's gear list:Sjak's gear list
Ricoh Caplio GX100 Sigma DP2 Sony Cyber-shot DSC-F717 Panasonic Lumix DMC-LX7 Pentax K100D +4 more
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Pentax K100D
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