Question about Canon EF-S 17-85MM F/4-5.6 IS USM Lens
Please forgive me if I'm being a little ignorant here as I am new to SLR's but I have just purchased an EOS 40D with the canon EF-S 17-85mm F4-5.6 IS USM lens.
Now my understanding was that this would adjust to F/4 at wide angle and a max of F/5.6 at the zoom end. However at no point in the zoom range wil;l the camera let me adjust the appeture below F5.6. (I have tried another lens on this body which will drop below F5.6)
You are correct in thinking that it should be possible to set the aperture wider than f/5.6 at the wide end of the zoom range. My best guess is that the lens is defective. I'd suggest returning it for a replacement.
Posted on Dec 26, 2008
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Posted on Jan 02, 2017
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