Canon FTb - Page 17

FD
50mm
F 1.8
Manual
Control of Aperture
1
By
pressing
the
stopped
down
functioning
lever
and
I
turning the
preset
aperture ring,
the
diaphragm
can
be
closed
down
to any f/stop and the
depth of
field at the
time
of
shutter
release
can
be
checked.
When the lever is
reset
to
its original
position,
the diaphragm again returns
to
maximum
opening.
r
The
aperture
is manually
stopped down also
when
per-
forming
close-up
photography
and
macrophotography.
1
In
case of Canon FD
Lens
5Omm F 1.8, turn the auto-
b
matic
aperture
lever
of the lens
counterclockwise all
the
way and
set the manual
lock lever
at
"
L"
position
be-
fore mounting
the lens.
This
manual lock
lever
locks
the
automatic
aperture lever
and the diaphragm
can
be
opened
or closed
by turning
the
preset
aperture ring.
For
releasing
the lever,
return
the manual lock lever
to the original
posi-
tion
(white
dot).
With
the
use of this lock,
photography
using
manually
oper-
ated aperture
can also
be
perf
ormed
on
Canon
single lens
ref
lex
cameras
like
FX
besides the
TLb,
FTb,
FT
QL
and F-1.
But
do
not
use it together
with Canonflex
R, RP,
RM
and
R
2000.
Manual
Lock
Lever
Automatic/Manual
Aperture
Lever
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