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DPChallenge Forums >> Hardware and Software >> Old Pentax K-Mount lens on a Canon XTi?
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08/13/2010 11:59:07 AM · #1
Here's the story. My parents are now using my old Canon Rebel XTi. They used to have an old Pentax film camera of some sort, and apparently they have a 300mm Macro Pentax K-Mount lens that they would like to be able to use on the XTi if possible. It's fine if it only works in full manual. He's getting conflicting reports from various sources on whether an adapter to accomplish this task even exists. Anybody out there have any insight on this situation? Thanks a bunch in advance!
08/13/2010 12:09:40 PM · #2
I have found some info on the ol' interwebs. It looks like such an adapter exists, but only works with EF-S cameras without modifying the lens (which is fine with me). I could still use some confirmation if anyone has any.

//photo.net/canon-eos-digital-camera-forum/00FAVF
//compare.ebay.com/like/250624228804?ltyp=AllFixedPriceItemTypes&rvr_id=124130225923&crlp=1_263602_263632&UA=%3F*F%3F&GUID=29d279951270a02663801e50fff90aaf&itemid=250624228804&ff4=263602_263632
08/13/2010 12:36:48 PM · #3
Hi

I bought an adapter from Adorama to use my pentax equipment on my Canon xti. It makes all the auto features invalid because the adapter flange covers the contacts. To get the correct exposure, take a shot and then look at the histogram to adjust the f-stop and/or time
08/13/2010 12:58:57 PM · #4
Awesome! Any chance you have a link and/or pics of the adapter to make sure we get the right thing?
08/13/2010 04:19:41 PM · #5
//www.amazon.com/Pentax-Canon-mount-adapter-brass/dp/B000YDC1W8
08/13/2010 07:44:29 PM · #6
Linky
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