ECLAIR ACL I Camera, Руководство пользователя

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Low profile and portability not only gives the ECLAIR
ACL camera an elegant appearance, but it is a practical
feature which enables the cameraman to take pictures
while in a very confined space. The ACL rests low on the
shoulder; in fact wherever there is headroom there is
space for him to operate his camera.
Examples:- seated in a moving car next to or behind the
driver; in a cockpit; in a bunker; up a tree; or in any
confined space where a camera is called for. The ACL is
unobtrusive.
Total weight is important where there is plenty of action
and mobility is the key word. The ACL with its 60m (200 ft)
magazine, fully loaded, weighs 3.6 kg (8 lbs).
With all its ancillaries, this camera presents no problem
when climbing any structure or following any action. The
ACL is truly a professional camera.
A self-blimped quiet running camera permits candid
shots and unselfconscious action. The moving parts in the
ACL have been kept to a minimum; it’s wedge-shaped
claw slides quietly into the film perforation; it’s plane
shutter and oscillating mirror reduce the whir of rotating
mirror shutters; the overall noise level is better than 32 dB
at 1 m (3 ft).
A crystal controlled brushless motor has been specially
designed for the ACL. Incorporated in this motor are some
of the features developed for spaceflight - miniaturised
control, high efficiency, freedom from static etc. It is based
on The Hall Effect; runs silently, draws only 0.8 A from the
small rechargeable battery. No hash is added to the radio
microphone signals. The speed is accurately regulated to
24 or 25 frames per second by crystal control.
Snap-on magazines, made famous throughout their
range of cameras, afford the film maker the advantages of
a 3 second effective re-load time and the ability to change
quickly to different film stocks by pre-loading magazines.
The cameraman has the choice of 60m (200 ft) core
loads, standard 30m (100 ft) or 60m (200 ft) daylight
loading spools.
The viewfinder can be rotated through 3600 parallel to
the camera’s side and is one of the many practical fea-
tures in the design of the ACL. For low angle shots and for
shooting over the shoulder, the fully adjustable viewfinder
enables the cameraman to position the eyepiece and
compose his picture without being a Contortionist. Normal
dioptre adjustment and exit pupil shutter for excluding
stray light are part, of the design.
Lens mounting is basically “C” mount surrounded by a
large threaded shoulder to which a TS adaptor for
Cameflex, Arriflex, Nikon, and other professional mounts
can be attached without affecting the back focal distance
and putting undue strain on the C mount threads.
Image steadiness: movement is less than one thou-
sandth of the picture height.
The ground glass on the entry face of the prism is
engraved with 2 frames. The smaller has rounded corners
for TV format 8.41 x 6.30mm. The larger, academy frame,
for the motion picture format 10.2 x 7.4mm has square
corners. A cross indicates the centre position of these
frames. The area outside the academy format is a “safe”
area, thus minimizing the possibility of the intrusion of
microphones and other unwanted objects in the picture.
An automatic marker light is mounted adjacent to the
camera aperture. It is controlled by a switch located in the
base of the camera. Automatic operation causes the
clapper bulb to glow for 0.3 secs. thereby fogging approx.
the first 8 frames (24 f.p.s.) of each scene when the
camera is started. The last maximum fogged frame
becomes the visual cue mark, being the point where the
motor has attained its nominal running speed. For crystal
controlled operation this facility can be switched off as a
clapperboard is normally employed in this application. An
8v pulse duration 0.3 secs. simultaneous with the glow of
the clapper bulb provides the receiving “BLOOP” signal for
the tape recorder oscillator which triggers the audio cue.
A pilotone module incorporated with a lateral handle
mount and switch is an optional extra for the ACL. This
module provides a pilotone signal at 50Hz for 25 f.p.s., at
60Hz for 24 f.p.s. and also at 10OHz for 25 f.p.s. The
pilotone signal can either be cut out for the duration of the
bloop or be present at the same time as the bloop, accord-
ing to client’s requirement.
The rechargeable battery supplied for use with the ACL
is a SAFT type VR1. It consists of cadmium nickel cells
enclosed in a plastic flatpack. The battery has a shoulder
strap and is small enough to fit into a jacket pocket. A fully
charged battery will supply power for running 720m
(2400ft) of film.
The fast recharger enables a flat battery to be fully
charged within 30 minutes. It operates on 220/240 volts
50Hz or 127V 60Hz mains supply. Indication of full charge
is provided.
1. DESIGN PHILOSOPHY
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