Canon FTb - Canon Booster

t4*,
Ca
n
on Booster
An
optional
Canon
Booster
is
an
auxiliary
meter
that
is
attacheC
to
the
FTb
for measuring
the
subjects
under
dim
lighting
conditions.
Light Measuring
Range:
With ASA
100
film, EV
lO
(f
l22at
l12
sec.)-
EV
3.5
(f
|
2
at
15
sec.).
Measuring
Method
:
Zero-method
direct reading
type.
Photocell
:
Utilizes CdS
photocell
of the c
amera.
Exposure
Time
Dial
:
In
the case
of FTb:
30, 15,
8,
4,2,
l, | 2,
I
4
li8,
l/15,
1130
sec. The
camera
type indicator
window
rs
set
at
"
P.Fb".
Power
Sources. For
operating
meter,
use
two
1.3
v
Mzo
\1625',
mercury
batteries.
For
illumination
of meter indicator
window,
use
one I
3 v M2O
mercury
battery
(use
the
battery removeJ
from the
camera).
Battery
Check:
Can be
checked
by
the
switch.
Size
: 65
x
54
x
39mm
(2t;,"
x2t6"
x
Ll2").
Weight:
180
gramg
(6:ia
oz.).
45
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