Question about using Canon lenses...

nitrox28 · 12-13-2009, 07:13 PM

Is there an easy way to use my Canon lenses with my K20D? And if so, will the auto focus work? What if the lens has IS?

Marc Sabatella · 12-13-2009, 08:47 PM

This is a commonly asked question, but no. Canon lenses work on Canon cameras, Pentax lenses on Pentax cameras. Some people who like tinkering may have managed to cobble together crude adapters that allow Canon lenses to sort of work on Pentax if you don't need them to be able to focus at infinity, don't need auto focus or exposure metering, and/or don't mind the IQ being degraded, but they generally would not be worth your trouble to seek out.

jmc7104 · 12-13-2009, 09:35 PM

With the proper reversing rings they make excellant macro lens.

nitrox28 · 12-14-2009, 07:16 AM

Exactly what I needed to know. THANKS!!!!!!

egordon99 · 12-16-2009, 08:41 AM

BUT you can use Pentax lenses on Canon bodies with the appropriate adapter. Manual focus/exposure of course, but LOTS of folks using old SMC-A/M primes on their EOS bodies.

12-13-2009, 07:13 PM	#1
nitrox28 Forum Member Join Date: Jul 2009 Location: Kentucky Posts: 62	Question about using Canon lenses... Is there an easy way to use my Canon lenses with my K20D? And if so, will the auto focus work? What if the lens has IS?

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12-13-2009, 08:47 PM	#2
Marc Sabatella Veteran Member Join Date: Sep 2006 Location: Denver, CO Photos: Gallery Posts: 10,685	This is a commonly asked question, but no. Canon lenses work on Canon cameras, Pentax lenses on Pentax cameras. Some people who like tinkering may have managed to cobble together crude adapters that allow Canon lenses to sort of work on Pentax if you don't need them to be able to focus at infinity, don't need auto focus or exposure metering, and/or don't mind the IQ being degraded, but they generally would not be worth your trouble to seek out.

12-13-2009, 09:35 PM	#3
jmc7104 Veteran Member Join Date: Feb 2008 Location: Rock Island, Illinois 61201 Photos: Gallery Posts: 436	With the proper reversing rings they make excellant macro lens.

12-14-2009, 07:16 AM	#4
nitrox28 Forum Member Join Date: Jul 2009 Location: Kentucky Posts: 62 Original Poster	Exactly what I needed to know. THANKS!!!!!!

12-16-2009, 08:41 AM	#5
egordon99 Inactive Account Join Date: Dec 2006 Location: Outside of Philly Posts: 1,561	BUT you can use Pentax lenses on Canon bodies with the appropriate adapter. Manual focus/exposure of course, but LOTS of folks using old SMC-A/M primes on their EOS bodies.