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DPChallenge Forums >> Hardware and Software >> EF lenses
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Showing posts 1 - 6 of 6, (reverse)
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11/29/2005 09:36:56 PM · #1
Is there any truth to the statements that I see on Ebay that a lens is an EF lens (Canon), but it only works on film SLRs?? This confuses me, because I thought an EF was an EF and the digital stuff was backwards compatible. Stupid me, maybe???

Thanks in advance.

And no, I can't RTFM, since I don't have the lenses yet :)
11/29/2005 09:37:52 PM · #2
EF works on the canon DSLRs just fine. EF-S only works on the 300D,350xt and 20D digital though.
11/29/2005 09:38:47 PM · #3
EF lenses are made for the EOS cameras, film and digital.

Message edited by author 2005-11-29 21:39:29.
11/29/2005 09:39:25 PM · #4
Some of the earliest EF lenses don't have the neccessary connectors to go full auto on a dSLR I believe. But I'm not 100% sure.

R.
11/29/2005 10:19:39 PM · #5
Not sure but my 1990 circa 35-105 lens works just fine on the 20D.
11/29/2005 10:44:11 PM · #6
If it's a non-canon brand lens (Sigma, Tamron, Quantray, tokina, etc etc etc) it's possible it wont work on newer EOS camera bodies...

But if it's a Canon lens it should work on any EOS camera with the exception of the EF-M which wont power up the 'servo focus' telephotos..

(The EF-M is a manual focus only film EOS camera..)

Cheers, Me.
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