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

[mcdonobr]

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!

[ebiggs1]

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.

[RobertTheFat]

---

@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.

[mcdonobr]

Thanks guys.

Bob- no microadjustment on the 40D unfortunately.