The Pentax K to Canon EF-S Lens Adapter by FotodioXfrom Pentax K to Canon EF-S Lens Adapter by FotodioXlets you mount Pentax K-mount lenses on select Canon EOS EF-S-mount cameras. Infinity focus and manual aperture control are maintained and compatible cameras include the EOS Digital Rebel, XT, XTi, XSi, XS, T1i, T2i, T3i, T4i, T5i, T6i, T6s, T7i, XS, T3, T5, T6, T7, T100, and the EOS 20D/a, 30D, 70D, 77D, 80D, 90D, and 7D-series cameras.

This adapter is not compatible with Canon full frame EF cameras such as the Canon EOS 1D series, 5D-series, and select EF-S-mount cameras including the 40D, 50D, 60D, and 60Da.

For mounting Pentax K-Mount Lenses on Select Canon EOS EF-S-Mount Cameras

Related Questions and Answers

Q: 1. How do I take it off??

A: The Fotodiox Pro Lens Mount Adapter for Pentax 67 Lens to Canon EF-Mount Camera, when mounted onto an EF mount camera, will release with the camera's lens release button. There is also a release knob on the adapter to release an attached Pentax lens.

Q: 2. I have a cheap version of this adaptor - 30 bucks off ebay - while it all works and fits well - my Pentax 67 lenses are very prone to flare - FYI this adaptor is attached to a metabones - then to a Sony A7S2 / R2 . I doubt weather my metabones is causing the issue here. I suspect its the interior of the cheap adaptor - does anyone here that owns one of these Fotodiox know if the interior is a super matt finish similar to the metabones ? Or is it a shiny painted black ???

A: It's very, very matte, and very grainy like a course powder was coated on the inside.

Q: 3. Will this work with a Canon EOS Rebel SL1?

A: Yes the Vello Pentax K Lens to Canon EF-S-Mount Camera Lens Adapter is compatible with the Canon SL1 camera. Although the lens will fit physically, autofocus, automatic diaphragm (AE metering), and other functions dependent on communication between camera body and lens will be disrupted by the lens adapter. You will need to focus manually, and to set exposures manually or meter in aperture priority (stop-down) mode. Focusing to infinity is retained.

Q: 4. I have older Vivitar and Kiron lenses that have Pentax K mounts. Will this adapter work with my Canon EOS 80D Body?

A: Yes, it will work.

Q: 5. I have an older Pentax 400/4 lens with a male flange and I need an adapter that will slip into that flange which is rotatable to lock that lens adapter onto the that lens. The other needs to fit Canon EOS. Are this available? I can't find any reference to this adapter on the Fotoidox pages. I do have same adapter to Nikon but need same to fit Canon. Thanks,James

A: I'm sorry but I have no knowledge relating to this particular question.

Q: 6. Will this fit a soligor tele-auto 400mm f/6.3 lens to a canon t6?

A: If i'm not mistaken, this lens was an M42 screw mount and needs an M42-EF lens adpater. Click the link below to view; https://bhpho.to/3eRBhZ5

Q: 7. Re: FotodioX Pro Lens Mount Adapter for Pentax 645 Lens to Canon EFJust wondering, anyone know how well this this adapter fits the Pentax lenses? I bought a different brand from a local dealer, but the slightest touch of the release button and the lens comes off!I'd like to know if the FotodioX one is more secure.Thanks.

A: B&H does not pay me for my help. go search it.

Q: 8. Is there any significant difference between the Vello brand and the FotodioX brand of this Pentax K to EF-S adapter? Thank you!

A: These adapters would be quite similar to one another, so you would have a good experience with either one you choose.

Q: 9. If a 200mm 645 lens (original manual focus) is mounted on a Canon 5D II what magnification (or reduction) will result?

A: There is a crop factor of .78 so a 200mm 645 lens on a full frame 35mm DSLR is going to be around 256mm.

Q: 10. Hi, does this adapter allow me to control the lens aperture on Pentax 645 FA and D-FA lenses.I cannot quite see by the photos if this is possible.I assume that you can turn the outside of the adapter to adjust the aperture.Please confirm.Many thanks, Scott

A: When using the FotodioX Pentax 645 Pro Lens Adapter for Canon EF-Mount cameras, if the lens has an aperture ring, you can adjust the aperture manually.