American Cinematographer - August 1983 - 14

WHAT'S NEW

tremely important as it effectively
doubles the horizontal viewing angle

mm ra@®(u)(gTr§B ©i(siW[i(gii mi® yTTKMirwi

anamorphozing is done
with Todd-AO high quality elements, it
results in very little distortion and vir¬
tually no loss in resolution.
Normal operation of the Todd-AO
Video system involves a standard
NTSC signal as the camera output

NEW GUILD KELLY CALCULATOR
The Guild of British Camera Techni¬
cians in association with Kodak, Ltd.,
have re-designed the old Kelly Cine

Calculator.

Cinematography has de¬
veloped greatly since the Kelly Cal¬
culator was first produced. The range
of lenses and their aperture settings
have vastly improved; film stocks and
fields of view have changed. Metric
dimensions are more commonly used.
The new Guild Kelly Calculator now
includes the following scales: hyperfocal distance; depth of field; film
usage; exposure compensation; and
fields of view (including anamorphic).
The calculator has

a

wider selection

of lenses. The 35mm version features
the

following lenses: 18mm, 20mm,

32mm, 40mm, 50mm, 75mm, 85mm,
100mm, and 135mm. Extended fea¬
tures include a f/1 aperture, neutral
density and color filters. The field of
view scales for 35mm contain Acad¬

emy
the

1:1.33, Widescreen 1:1.85, and

Anamorphic 1:2.35 formats. Also

available in

a

16mm version.

For further information, please call
or write: BIRNS & SAWYER, INC.,

1026 N.

Highland Avenue, Dept. PR,
Hollywood, CA 90038. Telephone:
(213) 466-8211

LENS SYSTEM FOR WIDE
SCREEN PROJECTION
To fill

need for

integrated camera/lens/projector anamorphic video
system which can be used in applica¬
tions such as video teleconferencing
and closed-circuit projection of video
source

a

material in

an

a

wide

screen

for¬

mat, Cinema Products recently devel¬
oped the Todd-AO Video lens system.
Cinema Products' engineers have
adapted Todd-AO anamorphic ele¬
ments to high-speed Canon fixed
focal length lenses (with prism optics
compensation) to work with an
Ikegami EC-35 video camera. They
have also successfully applied ToddAO anamorphic techniques to work
with a specially adapted variable focal
length lens achieving horizontal view¬
ing angles up to 80°. Starting with a
standard 1.33:1 TV aspect ratio and
using the normal anamorphic
squeeze ratio of 2:1, Todd-AO Video
yields a new anamorphic video aspect
ratio of 2.66:1.

Cinema Products' Todd-AO Video

system utilizes a front anamorphozing technique for both prime and
zoom lenses. This front anamorphozing technique (as opposed to rear
anamorphozing techniques) is ex¬

of the lens with

no

loss in aperture.

When front

where transmission is involved. When
not transmitting, however, ultimate
quality in picture resolution and total

freedom from moire interference

can

be achieved

by using the camera's in¬
dependent RGB output and, in turn,
driving the projector in the RGB
mode. The system works equally well
with cameras such as the Ikegami
EC-35

camera

for electronic cin¬

ematography as well as with lower
priced cameras such as the Ikegami
ITC-730 camera.
For further information please con¬
tact Cinema Products Corporation,
2037 Granville Avenue, Los Angeles,
CA 90025. Tel: (213) 478-0711 or (213)
477-1971.

3-D DIGITAL VIDEO EFFECTS
The Broadcast

Equipment Division

of NEC America, Inc. announces the

availability of the new Optiflex
EPR-400 Perspective/Rotation ac¬
cessory- a cost-effective option
which greatly expands the creative
capabilities of the E-FLEX DVE® sys¬
tem with a wide new range of threedimensional digital video effects.
Utilizing the smoothest digital video
processing techniques available, the
Optiflex system features an easy-touse controller, allowing the operator
to add, quickly and easily, an entire
new range of three-dimensional ef¬
fects to E-FLEX sequences. The im¬
age can be rotated around three
axes:

horizontal, vertical and perpen¬
degree of rotation is

dicular. The

easily variable.
Horizontal

fects

or

vertical rotational ef¬

be enhanced

can

by adding

depth through perspective. Rotation
on the perpendicular axis makes the

image spin like

a top or a

Each axis

be

where

on

can

the

propeller.

positioned any¬

screen as

desired. This

allows the operator to

change the
viewpoint, and the degree of perspec¬
tive effect is

separately variable. On
perpendicular rotations, the point of
spin could be in the center, at a corner,
12

AMERICAN

CINEMATOGRAPHER, AUGUST, 1983
American Cinematographer - August 1983

Table of Contents for the Digital Edition of American Cinematographer - August 1983
