M S I G N A L - Canon AE-1 Instructions Manual

Manual Aperture
Control
"M"
Sig
Battery Check and Stopped-Down
Battery
Check
and
Stopped-Down
Metering lndex Mark
Metering Index Mark
This battery check index mark serves
also a s the stopped-down metering index mark
for use with Canon F L lenses and other
similar manual lenses, when exposure measure-
ment i s performed with a stopped-down
diaphragm. (See page
55.)
Manual Aperture Control "M" Signal
(LED)
When the aperture ring is not set at the
1 I 1
" A
mark, you cannot get the wrrect ex-
posure in
AE
photography. When the aperture
ring i s set at any posltlon other than the "A"
mark, the manual aperture control "M" s~gnal
will blink a s a warnlng. Also, when Canon FL
lenses, Bellows or the l ~ k e are used, this
warning signal flashes on and off when ex-
posure measurement is performed.