My recommended vintage lenses for the Canon M50 and adapters M42 Mount Lenses: EOS-M to M42 adapter (K&F sold out, but this one is very good too) - https://geni.us/N3Tw Helios 44M (my favourite) - https://ebay.us/yHQayn Helios 44-2 (Batman Movie) - https://ebay.us/XznVV5 Takumar 135mm (for awesome portraits) - https://ebay.us/iKYlQz PK Mount Lenses: EOS-M to PK Adapter - https://geni.us/78MMsDt Zeiss Jena II 24mm f2.8 Macro - https://ebay.us/caOebk - The lens I shot this video on (can be hard to find) My Birding lens - Tokina 400mm f5.6 - https://ebay.us/mXJLTK Canon FD Lenses: EOS-M to Canon FD Adapter (K&F sold out, but this one is very good too) - https://geni.us/02isp Canon FD Mount lenses (look for Canon Branded Lenses, not 3rd party) 28mm, 35mm, 50mm, and 135mm are all good - https://ebay.us/7d1I8P