topic Problem with my EF24-105mm f4 lens on 40D in EF & RF Lenses

Problem with my EF24-105mm f4 lens on 40D

mcdonobr — Wed, 24 Dec 2014 19:50:03 GMT

For some reason my recently acquired lens will not focus sharply on my 40D, yet it focuses properly on my 7D. All my other lenses (EF70-200 f2.8, EF-S17-55 f2.8, EF28-70mm) also work properly on my 40D. Any ideas what my problem might be?

Thank for your help!

Re: Problem with my EF24-105mm f4 lens on 40D

ebiggs1 — Thu, 25 Dec 2014 13:58:03 GMT

Without knowing anything more about your situation, I would suspect the 40D and not the lens. The EF 24-105mm f4 is a great lens and a best buy in Canon "L" lenses. If it is working properly on your other camera, the lens is likely good.

Re: Problem with my EF24-105mm f4 lens on 40D

RobertTheFat — Thu, 25 Dec 2014 15:23:43 GMT

@mcdonobr wrote:
For some reason my recently acquired lens will not focus sharply on my 40D, yet it focuses properly on my 7D. All my other lenses (EF70-200 f2.8, EF-S17-55 f2.8, EF28-70mm) also work properly on my 40D. Any ideas what my problem might be?
Thank for your help!

Does your 40D have autofocus microadjustment? (The 50D and 70D do, while the 60D doesn't, so it isn't an easy guess.) If so, and if the problem is a consistent mismatch between that lens and that body, you may be able to adjust it out.

Re: Problem with my EF24-105mm f4 lens on 40D

mcdonobr — Fri, 26 Dec 2014 13:05:45 GMT

Thanks guys.

Bob- no microadjustment on the 40D unfortunately.