Canon A-1 Repair Manual page 23
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Also See for A-1:
- Instruction manual (164 pages) ,
- Instructions manual (105 pages) ,
- Service manual (86 pages)
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22
o The degree of LED illumination changes in four
step increments depending on the brightness of sub-
jects seen in the viewfinder.
Brightness of
subject seen in
the Viewfinder
arightness
Over EV15
1
From
EVIl
to EV15
1/2
From
EV5~
EVIl
1/8
Under EV5
1/16
In flash photography, when the charging completion
signal is transmitted, the illumination is fixed
at 1/8.
(This is the degree of illumination
designated for EV5 to EVIl.)
When the exposure
memory switch is held in, the degree of illumina-
tion is determined by the lighting conditions at
the time
the
button is pressed.
This explains why the LED brightness maintains
almost the equal
degree
of illumination to human
eyes even in the
br
~g
h
t
or dim light conditions.
(3)
Point to remember
For shutter priority AE mode, there is a click stop
for each
shut
ter speed
on
the dial.
If a shutter
speed
i
s
se
t
t
o an
in
t ermediate position between two
adjacent
s
hut
t
e
r speeds, either
of
the two click stop-
ping shutter
s
peeds
is
indicated and the shutter is
actually rele
a
sed at that indicated shutter speed
.
(Example)
If a shutter
speed
i
s set to an intermediate posi-
tion between 1
/
250
and
1
/
125, the shutter will be
released
at
either of
1/
250 or 1/125 sec.
Aperture value can be set for every half an f/stop in
aperture priority AE mode.
In
a
perture
priority AE mode,
when the lens is set to
an aperture value smaller than its maximum aperture
AVO, the latter is indicated in the viewfinder and the
exposure will be correct e ven
if
the shutter is re-
leased then.
(Example)
Using a 50mm f
/
l.8 lens,
if
the AT dial is set to
f
/l
.2
or f/l.4, its
AVO o
f 1.8
is
indicated and
- Quick Links:
- Shutter Mechanism
- Disassembly
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