Canon A-1 - Manual (Page 169)

time, carefully check the operation of each
part.
Cleaning the Camera and Lens
Before doing anything else, clean the camera
with a blower brush. It is best to have two
blower brushes, one for the camera body
and the lens barrel, the other for the lens
surfaces, eyepiece and mirror. If the blower
brush is sufficient to get the camera clean,
stop there. By all means, avoid touching the
lens. Should you accidentally get finger­
prints or smudges on the lens or eyepiece,
use lens tissue (not eyeglass tissue!) or a
clean, soft, untreated cloth, after breathing
on the lens surface, if necessary. Never use a
handkerchief, facial tissue or any other cloth
which might permanently scratch the lens,
and never use a cloth treated with a chemical
which might totally ruin the lens coating.
Put only one or two drops of lens cleaning
fluid on the tissue, not the lens, and, starting
at the center of the lens, lightly wipe it while
working towards the outer edges in a circular
motion. Use a silicon cloth, if.necessary, to
wipe smudges off the camera body and lens
barrel only. The mirror is another part you
should never touch. A dirty mirror does not
affect
the image though it may impair
viewing. If it is dusty, clean it very gently
with the lens blower brush. If more cleaning
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