Re: DUST: Does this rule out buying DSLR's?

"Floyd Davidson" <floyd@xxxxxxxxxx> wrote in message
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"Skip M" <shadowcatcher@xxxxxxx> wrote:
--
Skip Middleton
http://www.shadowcatcherimagery.com"Floyd Davidson" <floyd@xxxxxxxxxx>
wrote in message
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"Daniel Kasaj" <dkasaj@xxxxxxxxx> wrote:

Well, your theory fails on one practical example. I have the EOS 5d and
I only have the 50mm f/1.4 which I do no ttake off. I was shooting in
"normal" conditions all the time, and then all of a sudden, there was
dust in the viewfinder.

But that has nothing to do with "my theory".

This might not happen with the 1Ds, tho.

If is better sealed, that may be the case.

Note that you have just demonstrated a superior characteristic
of an DSLR. Cameras with a permanently mounted lense are just
as likely to get dust on the sensor as a DSLR whose lens is
never changed. (Actually, in practice more likely, simply
because some DSLRs are higher quality professional models that
will be sealed better.) So they *both* could potentially get
dust on the sensor.


That's not strictly true. Sealing of the body isn't the only issue,
sealing

Why say it isn't true and then provide an example that
demonstates *exactly* what I said? *Some* DSLRs are sealed
better than others... and nobody said that sealing the body was
the issue.

If the sealing of the body isn't the issue, how on earth could a camera with
a permanently mounted lens get dust in it? Sucking it in through the lens
would be the only other route. Its lens mount can't be the culprit.
The lens in question, the 50mm f1.4, has no sealing, at the mount, against
dust or the elements, so a camera with it mounted, even though it is never
changed, is more likely to get dust in through the mount than a camera with
a permanent lens would be.
And I didn't say it wasn't true, I said it wasn't strictly true, which is
correct. There are cases that the DSLR would be fairly impervious to dust
coming in through the lens mount, but this is not one of them.
--
Skip Middleton
http://www.shadowcatcherimagery.com


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