In article <4sf3h6$g6f@news.vanderbilt.edu>, orbande@ctrvax.vanderbilt.edu says...
>In article <31E9E574.63C7@crunchy.granola.com>,
>Nperry@crunchy.granola.com says...
>>I have some dust on the mirror and focusing screen of my EOS639
>>camera.
>>What is the recomended method to clean? Thanks

> A blower brush or some chemical air should do nicely. I
>generally avoid using any kind of cloth in order to avoid streaks
>getting on the mirror. You want to touch your mirror as little as
>possible.

I would NOT recommend air pressure (above the merest light breeze level
;-) - since it can force dust above the viewing screen where nothing but
a repair can remove it (unless the viewing screen is user-removeable).
A clean, fresh Q-Tip can be used to pick off some dust, or to clean a
slight smear when combined with a little fogging breath directed UP into
the opening (to avoid spit marks) - twirled LIGHTLY, to minimize scratches (some may occur anyway....).
Hope This Helps

BTW, PLEASE check your return addresses! They are often wrong (this one was),
and e-mail accompanying posts fails!