Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-14-2012, 07:13 AM   #1
Brian TS
Guest




Interchangeable Lens

Are Nikon and Canon lens interchangeable?

03-14-2012, 07:16 AM   #2
Pentaxian
JinDesu's Avatar

Join Date: Jun 2011
Location: New York City
Photos: Gallery
Posts: 5,624
Short Answer: No
03-14-2012, 07:40 AM   #3
Veteran Member
RioRico's Avatar

Join Date: Jun 2008
Location: Limbo, California
Posts: 11,264
Slightly longer answer: Nikon lenses (manual focus ones anyway) can be mounted on Canon cameras with the right adapters. Nikon lenses can even be modified to mount on Pentax cameras. But Canon lenses cannot be used on non-Canon dSLRs.
03-19-2012, 02:45 PM   #4
Junior Member




Join Date: Jan 2012
Location: Liverpool
Posts: 40
It's all to do with how far the lens mount is from the film or sensor. If the lens you are trying to use normally sits further away from the sensor than the lenses made for that camera, then an adapter is possible, but you will probably loose any control of the lens from the camera, including autofocus or auto-apeture. Exceptions are usually where a manufacturer makes two different systems, then the larger system will be able to donate its lenses to the smaller system, e.g. four-thirds lenses on micro-four-thirds cameras, or nikon F-lenses on 1-series cameras. Use a lens that has a shorter back-focus distance on another camera and you will lose infinity focus.

David

03-19-2012, 04:03 PM   #5
Veteran Member
RioRico's Avatar

Join Date: Jun 2008
Location: Limbo, California
Posts: 11,264
orangezorki is exactly right. There's a magic number called the flange-focal distance or back-focus distance or register. The register is the distance from the lens base to the frame (film or sensor). For Pentax, it's 45.46mm. Lenses with longer registers can fit on shorter-register cameras, maybe using simple adapters, and still reach infinity focus. Shorter-register lenses on longer-register cameras can only focus to infinity if an optical adapter is used. An optical adapter is a short teleconverter that stretches the focal length, slows the aperture, and probably causes some loss of image quality.

I won't bore you with the exact numbers, but here is a list of registers, from shorter to longer (the '<' mark means "shorter than"):
Pentax Q < Sony NEX < Olympus m4/3 < Samsung NX < Leica < Canon FD < Minolta MD < Canon EOS < Sony Alpha < Exakta < Pentax PK|M42 < Yashica C/Y < Olympus OM < Nikon
Exakta is close enough to Pentax for fairly simple adaptation. Otherwise, unless some more-or-less severe lens surgery happens, no lens can be fitted to a camera whose name is to its RIGHT on the list. No Canon FDs or EOSs on Pentax or Nikon. In fact, NOTHING can go on a Nikon camera except 1) Nikon-mount lenses or 2) optical adapters for lenses. Or some medium-format lenses, but that's another kettle of fish.

NOTE: When I say a lens won't work, I mean it won't focus to infinity. Shorter-register lenses CAN be used for closeup work -- but how many closeup lenses do you need? And as mentioned, most lens adaptations will NOT have autofocus, auto aperture control, etc. I like to adapt and modify odd-mount lenses, but I know my limitations...

Last edited by RioRico; 03-19-2012 at 04:13 PM.
03-21-2012, 11:26 AM   #6
Pentaxian




Join Date: Jan 2012
Location: Slovenia
Photos: Gallery
Posts: 2,163
Just like to add my humble experience: the infinity focus adapters for Nikon are hit-and-miss. On some lenses they reach infinity, on some they don't and on some go waaaaay past. All of them crap the IQ so bad you can't believe it until you try it out.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, lens, pentax help
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Are K-r and K-5 lens interchangeable. buckskin Pentax K-r 4 05-31-2011 07:27 PM
G3, smallest and lightest digital interchangeable lens camera with a viewfinder jogiba Non-Pentax Cameras: Canon, Nikon, etc. 14 05-16-2011 11:46 AM
Complete n00b to interchangeable lenses. Silverkarn Pentax DSLR Discussion 9 08-10-2010 10:11 AM
Are Sigma's lens hoods interchangeable? Egg Salad Pentax SLR Lens Discussion 9 04-01-2010 09:46 AM
Digital interchangeable lens cameras abbreviation - not SLR's ytterbium Troubleshooting and Beginner Help 6 07-26-2009 05:37 AM



All times are GMT -7. The time now is 01:45 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top