American Cinematographer - December 1980 - 36

Continuous film control: five stages.
1. Shutter has

just closed.
Registration-pin has begun
retracting, claw has engaged
the film.

4. Claw begins retraction.
Registration-pin protrudes to
move

the film to its final

posure

ex¬

position and hold it

there.
2. Claw is

halfway through its
pulldown. Registration-pin is
fully retracted.

3. As claw nears end of

pull¬
down, registration-pin begins
to emerge again.

5. No movement. Claw is

fully
Registration-pin is
fully out and motionless.
Shutter has now opened for
retracted.

exposure.

The16SR

registration
pin:
What seems to be an unsharp lens is
sometimes a slightly unsteady image.

/\t 24 fps, a 30 minute film

XlL contains 43,200 photo¬

graphs. Each of them should
exposed on film that isn't
moving. In frames that are
positioned just so, one after

be

the other.
A registration-pin
movement costs more to
build and is harder
to make silent. Why do
we insist on one?

Of the moving parts in a
16SR movement, 40% have to
do with the

registration-pin.
think it im¬
portant. And ARRI has been
making cameras since 1917,

Clearly,

we must

we've had time to think
about it.

so

Between exposures,

claw must

move

the

the film

a

relatively large distance, fast.
During exposure, the claw
must hasten back up to do it

again. The 16SR registrationAMERICAN

CINEMATOGRAPHER, DECEMBER, 1980



American Cinematographer - December 1980

Table of Contents for the Digital Edition of American Cinematographer - December 1980

American Cinematographer - December 1980 - 1
American Cinematographer - December 1980 - 2
American Cinematographer - December 1980 - 3
American Cinematographer - December 1980 - 4
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American Cinematographer - December 1980 - 6
American Cinematographer - December 1980 - 7
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American Cinematographer - December 1980 - 18
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American Cinematographer - December 1980 - 20
American Cinematographer - December 1980 - 21
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American Cinematographer - December 1980 - 28
American Cinematographer - December 1980 - 29
American Cinematographer - December 1980 - 30
American Cinematographer - December 1980 - 31
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American Cinematographer - December 1980 - 33
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American Cinematographer - December 1980 - 36
American Cinematographer - December 1980 - 37
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American Cinematographer - December 1980 - 40
American Cinematographer - December 1980 - 41
American Cinematographer - December 1980 - 42
American Cinematographer - December 1980 - 43
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American Cinematographer - December 1980 - 45
American Cinematographer - December 1980 - 46
American Cinematographer - December 1980 - 47
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American Cinematographer - December 1980 - 53
American Cinematographer - December 1980 - 54
American Cinematographer - December 1980 - 55
American Cinematographer - December 1980 - 56
American Cinematographer - December 1980 - 57
American Cinematographer - December 1980 - 58
American Cinematographer - December 1980 - 59
American Cinematographer - December 1980 - 60
American Cinematographer - December 1980 - 61
American Cinematographer - December 1980 - 62
American Cinematographer - December 1980 - 63
American Cinematographer - December 1980 - 64
American Cinematographer - December 1980 - 65
American Cinematographer - December 1980 - 66
American Cinematographer - December 1980 - 67
American Cinematographer - December 1980 - 68
American Cinematographer - December 1980 - 69
American Cinematographer - December 1980 - 70
American Cinematographer - December 1980 - 71
American Cinematographer - December 1980 - 72
American Cinematographer - December 1980 - 73
American Cinematographer - December 1980 - 74
American Cinematographer - December 1980 - 75
American Cinematographer - December 1980 - 76
American Cinematographer - December 1980 - 77
American Cinematographer - December 1980 - 78
American Cinematographer - December 1980 - 79
American Cinematographer - December 1980 - 80
American Cinematographer - December 1980 - 81
American Cinematographer - December 1980 - 82
American Cinematographer - December 1980 - 83
American Cinematographer - December 1980 - 84
American Cinematographer - December 1980 - 85
American Cinematographer - December 1980 - 86
American Cinematographer - December 1980 - 87
American Cinematographer - December 1980 - 88
American Cinematographer - December 1980 - 89
American Cinematographer - December 1980 - 90
American Cinematographer - December 1980 - 91
American Cinematographer - December 1980 - 92
American Cinematographer - December 1980 - 93
American Cinematographer - December 1980 - 94
American Cinematographer - December 1980 - 95
American Cinematographer - December 1980 - 96
American Cinematographer - December 1980 - 97
American Cinematographer - December 1980 - 98
American Cinematographer - December 1980 - 99
American Cinematographer - December 1980 - 100
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