davemoss Posted January 13, 2021 Share Posted January 13, 2021 I tried to be as specific in the title. I'm looking for an M42 to EF adapter that has both the chip (to allow for focus beep) as well as having the proper flange to not depress the pin, allowing for the auto/manual slider to properly function on SMC Takumar lenses. thanks for any suggestions. Link to comment Share on other sites More sharing options...
Jochen_S Posted January 13, 2021 Share Posted January 13, 2021 Shouldn't the pin get hit by something else inside your EOS, if at all? M42 adapters I have seen so far looked see through; i.e. just the thread, nothing pin hitting. I hope you own a pretty cheap camera to check out if your chip is safe. (<-Copied paranoia.) - I should buy one to test my chipped k-mount adapter. Link to comment Share on other sites More sharing options...
mike_sowsun Posted January 13, 2021 Share Posted January 13, 2021 There are lots of these on eBay. m42 to eos adapter with af chip | eBay Link to comment Share on other sites More sharing options...
JDMvW Posted January 13, 2021 Share Posted January 13, 2021 Be aware that if the little glued-on focus confirmation chip is not placed correctly it can short things out on the camera ( long ago post, but still valid WARNING on Focus Confirmation Adapters damage to electronics). Unless you have real eye problems, just trust your eyes, the little pirated circuitry doesn't really work well even when it works. Link to comment Share on other sites More sharing options...
petrochemist Posted January 14, 2021 Share Posted January 14, 2021 Shouldn't the pin get hit by something else inside your EOS, if at all? M42 adapters I have seen so far looked see through; i.e. just the thread, nothing pin hitting. I hope you own a pretty cheap camera to check out if your chip is safe. (<-Copied paranoia.) - I should buy one to test my chipped k-mount adapter. M42 lenses come in several varieties. Preset ones - with no auto pin. Switchable Auto - where there is a shut down pin but a switch on the lens disables it Unswitched auto - where the pin must be pressed for the lens to stop down. Canon cameras have no interactions with any of these, but the lens will work fine in fully manual mode if mounted by a suitable adapter. Many adapters have a small flange to depress the pin & allow use of the later unswitched lenses. If I remember correctly all M42 lenses will stop down when used on a flanged adapter - so most adapters now come with the flange. A little work with a file or dremmel tool can remove the flange if it's a major inconvenience, if you can't find any sold without it. Link to comment Share on other sites More sharing options...
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