Hi Howard:
That's interesting. It does not happen to my 28-105 though it does occur to
my bigger lens like 300f4/L and 200f2.8/L. So far, I haven't experienced
any problem in terms of sharpness or any other sort. I don't have this
problem with smaller lens like 24 f2.8, 20-35f3.5 or even 85f1.8. The
bodies that I'm using are EOS 50e and 5. I suspect one reason could be the
weight and the other reason could be attributed to the different production
period whereby the mount could be off by a bit causing this problem.
Anyone have any other comments?
Gary
----- Original Message -----
> I am new to this list and to photography in general, though I have
definitely
> been bit by the bug. I have an Elan 7 and a few Canon lenses at this
point.
> I have a question about the 28-105 f3.5-4.5. I asked this on one of the
> newsgroups and got variable responses.
>
> I noticed that when I have this lens mounted on the body I can feel what
one
> would describe as a very slight 'give', 'shimmy', 'click', or sensation of
> the lens not being tight to the body when I gently shaked or moved the
camera
> back and forth. At first I thought it was the way the lens mounted to the
> body but on further examination this proved not to be the case. The mount
to
> the body is quite firm. The slight click or give was coming from the
other
> end of the lens, the part that extends. To prove this, I found that when
I
> extend the lens and hold one hand on the barrel and the other on the end
of
> the extended lens and gently rock in opposite directions that the
sensation
> that I describe was reproduced. However, I should say that the lens seems
to
> function normally, though I haven't really gone beyond 4x6 prints at this
> point. I am not able to elicit the same sensation from my 100-300 f5.6L
EF
> lens, though I realize that this is an older lens with a different type of
> construction.
>
> So my question is…is this a normal finding in this particular lens? I do
> notice that there seem to be two parts that extend outward from the barrel
> and wonder if the lens is just constructed normally with a bit of side to
> side give?
>
> Sorry if this has been dealt with a before. Thanks.
>
> Howard
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