American Cinematographer - April 1984 - 105
ITSM ANICAM
MCPU-XYZ
shot will
place the subject closer, and a
close-up will put the subject right up to
the screen. Intercutting of different
now makes some sense, distancewise, and follow-convergence (or chang¬
audience.
excellent
philosophy
for photography, LMC does have some
practical limitations:
1. Extensive testing has not
yet been done to determine the exact
amount of screen parallax required for
aesthetically pleasing long shots and
medium shots. The application of the
philosophy is still on a learning curve.
an
Determination of the
2.
ex¬
point of convergence for long shots
and medium shots requires extensive
All-in-one control made
on
Stepping motor control
possible by fully programmable Z80 micro¬
camera motor functions, such as film advance,
direction, preset count, total count, exp. time, lapse time, shutter
open/closed, and capping shutter movement.
Available for AC
or
DC motor
HI 11
operation.
DOB iillB Q Q |
B □ □ II8II DUE
J-K CAMERA ENGINEERING, INC.
5101 San Leandro
St., Oakland, Ca. 94601, (415) 534-9018
| Rycote
slide
on
act
calculation
camera
See ANICAM in next issue.
processor.
Use ITSM to control
q g III
While
Animation
meter/timer
INTERVAL-TIMER STOP MOTION CONTROL
shots
ing convergence during a shot) is usu¬
ally not necessary. Finally, distant
scenes would be placed as long shots,
so they really would look distant to the
Intervalo-
Multi-axis stepping
motor control
MINI MOTION
slide
gentle improvements
beautifully made
-
to last
off
the set, which in turn
requires a hand calculator or pocket
computer and someone to operate it.
Manual calculations would take too
much production time.
3. The mathematical tech¬
nology must be somewhat sophisticated
if it is to take into account all the
variables of camera and scene.
4. Since this philosophy is
only proposed as a guideline and not a
hard rule for all photography, it requires
that the filmmaker have a good under¬
standing of 3D filming in general.
There may be other philoso¬
phies of convergence, or philosophies
which are combinations of two or more
of the foregoing, but the purpose of this
article was to show that there is more
than one way to skin the 3D cat; differ¬
without any
with
or
fiddling
screws
lining
Used
up
holes.
by all major Broadcasting
Organisations world wide
and Film
for
more
than
a
decade.
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eight plate'
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people have different ideas on the
subject of convergence, depending on
their knowledge or experience or lack of
ent
same.
Since
picture-making contains
such an incredible amount of diversity
of shooting situations, no single philoso¬
phy of convergence can be used as a
hard and fast rule, never to be broken or
modified. Some of the ones presented
here are virtually unusable, some are
excellent 90% of the time, while others
have some utility depending on the
situation.
It must also be remembered
that convergence is not the whole story
of shooting 3D. It is only one aspect,
although
an
important
one.
■
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103
American Cinematographer - April 1984
Table of Contents for the Digital Edition of American Cinematographer - April 1984
American Cinematographer - April 1984 - 1
American Cinematographer - April 1984 - 2
American Cinematographer - April 1984 - 3
American Cinematographer - April 1984 - 4
American Cinematographer - April 1984 - 5
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American Cinematographer - April 1984 - 78
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