Operation Manual

15
6. STANDARD ACCESSORY OPERATION
3.Using Exposure Multipliers (-2, -1, +1, +2)
Exposure multiplier indications are provided at both sides of the
and ▲ marks of the dial scale. Use the -1 or -2 mark when desiring to
cut the exposure to 1/2 of 1/4 and +1 or +2 mark to multiply the expo-
sure by 2 or 4.
Set the appropriate mark, instead of the or ▲ mark, to the dial
scale value.
T =
360×R
θ
R = Frames exposed in 1 second
T = Exposure time
= Shutter angle
θ
5
1
0
2
0
4
0
8
0
1
6
0
3
2
0
6
4
0
1
.
2
5
k
-
2
-
1
+
1
+
2
-
2
-
1
+
1
+
2
0
･
･
1
1
･
･
1
2
E
V
6
1/SEC
k
H
-2
-1
+1
+2
-2
-1
+1
+2
Note: Some cine cameras possess faster exposure times due to a
narrower rotating shutter angle (angle of light transmitting portion). It
is important to know the accurate shutter angle value versus cine
speed for your camera in order to determine proper exposure. Refer
to the camera operating instructions, maker’s catalogue, etc. for shut-
ter angle information.
Shutter angle and exposure calculation:
▲
H
▲
H