I'm really bad luck, reviewed some of the old images, many of the 17-40
shots on the 10D I have are not as sharp as used to be. Simply say some are
sharper than the others, all are stand still flash shots for people. Same
for a Nikon D70 shot I made last year with 18-70 (belong to my Boss), stand
still group photo under sunlight. I think I can't blame myself for manual
error under these simple situation.
C.H.Ling
----- Original Message -----
From: "Moose" <olymoose@xxxxxxxxx>
> Chuck Norcutt wrote:
>> f/5.6 is the limit specified by Canon for autofocus to work so it's on
>> the edge if the light isn't good.
>>
> A conservative spec., in my experience. I've been using lenses that are
> f6.3 at the long end on the 300D and 5D for years, Focus works well in
> even moderate light. I had some hunting indoors with the 300D, but the
> 5D is better.
>
> Moose
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