Will a canon ef 70-200mm f/4L usm work on a pentax k20d?
Posted by admin | Under Pentax K20D Monday Sep 28, 2009
No. If you think about it, they are totally different camera systems. It would be like trying to put a Ferrari piston into your Maserati. It ain’t happening
No,
The lens mounts are different.
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No. If you think about it, they are totally different camera systems. It would be like trying to put a Ferrari piston into your Maserati. It ain’t happening
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digiPro
No,you can not use any lens from Canon with Pentax camera.
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Man, pfotoace, mr. "digipro," what number time is this that i am cleaning up after you? Actually, a Ferrari piston DOES work in a Maserati engine, because it is the SAME engine.
http://en.wikipedia.org/wiki/Ferrari/Maserati_engine
Ouch.
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Oh come on AS…Unless you are just straight up car nut, work in the industry or happen to keep up with corporate relationships for investment purposes, the average person doesn’t know Maserati and Ferrari are both owned by Fiat and the Maserati was, for a time, a division of Ferrari.
The point is still made…Canon and Pentax are different camera systems. No, the EF 70-200mm lens will not work on a Pentax K20D because the two cameras have different mounts and represent opposing lens/camera systems. They were never meant to be compatible with each other.
Mechanical adapters may exist to let a Canon lens phyiscally mount to a Pentax camera body but, Canon EF lenses have always had fully electronic mounts and the K20D wouldn’t know how to "talk" to the Canon EF lens to control the lens aperture or autofocus. Basically, the lens would have to be shot "wide-open" and the additional distance created by any mechanical adapter will likely act as an extension tube, creating focusing problems due to the distance from the lens mount to the imaging sensor.
In the end, you may need to make a choice to stick with one camera/lens system. Most new DSLR buyers don’t understand this today because we’ve had thirty years of point-n-shoots cameras being the norm and the general public is no longer familiar with the SLR concept. Specifically, in buying a Pentax camera, you’ve bought into a lens system more so than just a camera. Additional lenses you buy for that camera must be Pentax or Pentax-compatible lenses from third party manufacturers like Zeiss, Tokina, Sigma or Tamron. But as your investment in lenses grows over time and you become more skilled, you’ll eventually want to upgrade your camera. When that time comes, if you’ve got $1000 or more wrapped up in lenses for your K20d, you probably don’t want to have to replace all those lenses just because you bought a new camera. So, you’ll likely buy another Pentax at that time such as the new K-7 or whatever replaces it in a few years. All DSLR shooters deal with these issues so you are not alone because you chose Pentax.
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with an adapter you would be better served by buying a canon dslr
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