pentax lenses on other cameras?

mhaws · 06-13-2011, 01:13 PM

Can pentax lenses be used on other cameras? My sister in law has a cannon and was going to sell it really cheaply to my husband. It would be nice if he could use my lenses. Is there an adaptor or something that one could use? does it lower IQ to use an adapter?
Mine is a K-x and this other cannon is a rebel.

epqwerty · 06-13-2011, 02:58 PM

Adapters do exist if i recall for canon ones and for da lenses apterure control is not available. M42 lenses will work fine with an adapter. Other than that i have not played with them.

KxBlaze · 06-13-2011, 05:41 PM

You can fit a lot of lenses on other bodies as long as an adapter exists and as luck might have it, here is what you are looking for.

noblepa · 06-13-2011, 06:29 PM

Yes, adapters exist for some combinations of cameras/lenses. Canon has one of the shortest registration distances (sensor to lens mount) of any cameras, so it is the easiest to adapt other lenses to.

The opposite is not true. I've never heard of anyone using Canon lenses on a Pentax camera.

There are adapters that have optics in them, that can sometimes overcome such problems. They work sort of like a teleconverter. Like a TC, they can degrade the image quality.

Even if you find an adapter, you will probably lose functionality. The lenses may not autofocus on the Canon, or you may have to use stop down metering in lieu of automatic metering.

RioRico · 06-13-2011, 06:40 PM

Pentax lenses should not be used on Canon cameras. That is one of the major reasons for the spike in prices of used Pentax lenses -- Canon users have found how great they are, and they buy them, and drive up prices, and DON'T LEAVE ANY FOR USE PENTAX USERS!! No, you should use Fujica and Minolta-Sony and Exakta and Petri and Contax-Yashica and Olympus and Nikon lenses. But LEAVE THE PENTAX LENSES FOR THE REST OF US!! Karma will catch up with you, y'know.

epqwerty · 06-13-2011, 07:48 PM

Originally posted by RioRico

Pentax lenses should not be used on Canon cameras. That is one of the major reasons for the spike in prices of used Pentax lenses -- Canon users have found how great they are, and they buy them, and drive up prices, and DON'T LEAVE ANY FOR USE PENTAX USERS!! No, you should use Fujica and Minolta-Sony and Exakta and Petri and Contax-Yashica and Olympus and Nikon lenses. But LEAVE THE PENTAX LENSES FOR THE REST OF US!! Karma will catch up with you, y'know.

I agree with your comments. I've seen used takumar lenses destroyed because canon users wanted to use them and glued down the pin or mangled the aperture control to allow them to work on their bodies. It's quite sad that canon users must steal our glass in order to take good pictures. My only wish is that canon and nikon users would stop looking down on pentax when they themselves use pentax glass over their own company c

06-13-2011, 01:13 PM	#1
mhaws Forum Member Join Date: May 2011 Location: Utah Posts: 50	pentax lenses on other cameras? Can pentax lenses be used on other cameras? My sister in law has a cannon and was going to sell it really cheaply to my husband. It would be nice if he could use my lenses. Is there an adaptor or something that one could use? does it lower IQ to use an adapter? Mine is a K-x and this other cannon is a rebel.

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06-13-2011, 02:58 PM	#2
epqwerty Veteran Member Join Date: Dec 2009 Location: Ontario Posts: 550	Adapters do exist if i recall for canon ones and for da lenses apterure control is not available. M42 lenses will work fine with an adapter. Other than that i have not played with them.

06-13-2011, 05:41 PM	#3
KxBlaze Veteran Member Join Date: Feb 2010 Location: California Photos: Gallery Posts: 1,602	You can fit a lot of lenses on other bodies as long as an adapter exists and as luck might have it, here is what you are looking for.

06-13-2011, 06:29 PM	#4
noblepa Veteran Member Join Date: Sep 2007 Location: Bay Village, Ohio USA Posts: 1,142	Yes, adapters exist for some combinations of cameras/lenses. Canon has one of the shortest registration distances (sensor to lens mount) of any cameras, so it is the easiest to adapt other lenses to. The opposite is not true. I've never heard of anyone using Canon lenses on a Pentax camera. There are adapters that have optics in them, that can sometimes overcome such problems. They work sort of like a teleconverter. Like a TC, they can degrade the image quality. Even if you find an adapter, you will probably lose functionality. The lenses may not autofocus on the Canon, or you may have to use stop down metering in lieu of automatic metering.

06-13-2011, 06:40 PM	#5
RioRico Veteran Member Join Date: Jun 2008 Location: Limbo, California Posts: 11,263	Pentax lenses should not be used on Canon cameras. That is one of the major reasons for the spike in prices of used Pentax lenses -- Canon users have found how great they are, and they buy them, and drive up prices, and DON'T LEAVE ANY FOR USE PENTAX USERS!! No, you should use Fujica and Minolta-Sony and Exakta and Petri and Contax-Yashica and Olympus and Nikon lenses. But LEAVE THE PENTAX LENSES FOR THE REST OF US!! Karma will catch up with you, y'know.

06-13-2011, 07:48 PM	#6
epqwerty Veteran Member Join Date: Dec 2009 Location: Ontario Posts: 550	Originally posted by RioRico Pentax lenses should not be used on Canon cameras. That is one of the major reasons for the spike in prices of used Pentax lenses -- Canon users have found how great they are, and they buy them, and drive up prices, and DON'T LEAVE ANY FOR USE PENTAX USERS!! No, you should use Fujica and Minolta-Sony and Exakta and Petri and Contax-Yashica and Olympus and Nikon lenses. But LEAVE THE PENTAX LENSES FOR THE REST OF US!! Karma will catch up with you, y'know. I agree with your comments. I've seen used takumar lenses destroyed because canon users wanted to use them and glued down the pin or mangled the aperture control to allow them to work on their bodies. It's quite sad that canon users must steal our glass in order to take good pictures. My only wish is that canon and nikon users would stop looking down on pentax when they themselves use pentax glass over their own company c