Canon Question

Do the "full-frame" 5D lenses have the same mount as the APS lenses, and if so, do they perform as well with the smaller form factor?

 

No. The 5D (and 1D) bodies can only use the EF lenses, not the EF-S lenses.

 

yes the full frame EF lenses work with all canon eos dslr and film slr, canon pro grade L lenses only come in the full frame models

 

Yes, the full frame AF lenses will fit and work perfectly on a cropped frame camera. I have two of those and they work fine on my XTi.

 

Okay, chalk one up in my camp for completely misreading the question.

 

Whatever, make the switch to nikon, all lenses work on crop cameras, while they are clearly specified (DX), if they don't. With the rant over, the question has been answered in previous posts.

 

Make the switch to Nikon because all lenses work on crop? Then you say DX if they don't fit? Which is it? All of Canon's current lenses fit on their crop bodies. All of them, period!

If they are designated EF-S, they will not fit full frame.

 

Not only did that make no sense, it was kind of pointless.

 

add it wrong or not 100% true, all Nikon SLR lenses (AF and MF) will mount on all Nikon SLR camera, but they will not work 100%, it’s mostly with lower models and of course a AF lens on a MF body will not AF

 

Just as Canon labels their APS format only lenses EF-S, and the 35mm & APS format lenses EF.

 

APS-C is EF-S and EF. APS-H (1D MKII, 1Dn MKII, 1D MKIII) is EF only.

If rumors are ture though, APS-H may be done as of the 1D MKIV. They're just rumors though.

 

The APS-H is a 1.3 crop factor. Does the EF-S have a large enough image circle to work on those?