IB-ACL-0772 ECLAIR-DEBRIE OF ENGLAND INSTRUCTION BOOK FOR THE 16mm ACL CAMERA ECLAIR-DEBRIE (UK) LTD, ORION PARK, NORTHFIELD AVENUE, LONDON, W13 9SW, ENGLAND, Telephone: 01-579 3831 Telex: 934032
LIST OF CONTENTS SECTION 1 2 3 3.1 3.1.1 3.1.2 3.1.3 3.2 3.3 3.4 3.5 3.6 4 4.1 4.2 4.2.1 4.3 4.4 4.5 4.6 4.6.1 4.7 4.8 4.9 5 TITLE Design philosophy Technical specifications Description The camera body The bloop generator Output signals Synchronising the camera to the tape recorder The magazine The motor The battery The charger Accessories Operating instructions Charging the battery Dioptre adjustment of viewfinder To align the image in the viewfinder vertically.
1. DESIGN PHILOSOPHY 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.
2. TECHNICAL SPECIFICATIONS ACCESSORIES: handgrip, lateral handgrip bracket, pilotone module, filter wallet, selection of TS lens mounts, transport case, crystals, soft protective cover, tripod, range of lenses. ASPECT RATIO: 1.33 to 1. BATTERY: 12 volt. Capacity : 1 Amp-hour equivalent to 12 magazines, i.e. approximately 720m (2400 ft). CAMERA DIMENSIONS: 275 x 175 x 150mm (111/2 x 7 x 6in) including magazine but without lens.
3. DESCRIPTION 3.1. THE CAMERA BODY The camera consists of four main units 1. Camera body 2. Motor 3. Viewfinder 4. Magazine This comprises the mechanism plate (fig 2) on which is mounted the claw mechanism, the oscillating mirror, the plane shutter, the magazine drive shaft, and the prism/ground glass. The body also supports the lens mounts, the gelatine holder, the viewfinder, the magazine lock and safety catch and the embase unit which contains the camera’s electronics.
The mechanism plate. The complete mechanism is mounted on a plate for rigidity and ease of servicing. An eccentric and a fixed cam produces the claw movement which is rendered positive by counter tension. There are four drive shafts operating on self-lubricated bearings. 8 The aperture plate (fig.3) is manufactured from stainless steel hard chromium plated. On the left hand edge there is a fixed guide which is the edge reference for the film.
Lens Mounts. ‘C’ mount, lenses, as well as other professional mounts such as ‘CA’, Arriflex etc. may be used on the ACL. The mechanical back focal distance for these other lenses is- therefore greater than 17.52mm. The mount is designed like a flange of which the internal thread matches the ‘C’ mounts and the external thread matches the Eclair ‘TS’ mounts. Correct orientation of each lens is ensured by a slot at the top of the flange. The gelatine holder.
These advantages are, however, accompanied by a slight chnage in the optical back focal distance when the gelatine filter is in position. However this is compensated when visually focusing through the viewfinder. 1B-ACL-0772, CORRIGENDA Dec 1972 Instruction Book for the ACL Camera FIG. 5. INTERCONNECTION DIAGRAM. Nagra Recorder type 3 connector cableform. 1) Pin 1 of plug PS9 should be connected to socket 2 of Tuchel socket type 3401/1.
FIG. 6. MODULE INTERCONNECTIONS. The embase unit forms the flat base of the camera body. It consists of :1. A 3/8 Whitworth mounting thread. 2. A Jaeger socket for power supply to thE camera. 3. A camera start button. 4. Two cannon sockets for the motor power and ancillaries. 5. A stabilized 5V supply for the motor control module. 6. The clapper light circult.(fig.4) 7. A Souriau socket for electrical connection to the clapper lamp. 8. A clapper switch. 9. The bloop generator. (fig.
FIG. 7. MAGAZINE FEED SIDE. 3.1.2.OUTPUT SIGNALS available from the accessory socket. 1. A tacho signal in the form of a square wave of approximately 3.8V peak to peak is generated by the motor. At 25 f.p.s. the repetition frequency of this pulse is 1kHz and at 24 f.p.s. the repetition frequency is 960 Hz. This frequency can be divided down for pilotone f unctions. 2. A crystal signal in the form of a sine wave of approximately 1OOmV peak to peak is made available for test purposes. At 25 fp.s.
FIG. 8. MAGAZINE TAKE UP SIDE 3.2. THE MAGAZINE The distinguishing feature of an ACL 60m (200ft) magazine is that the major part of the film transport mechanism is an integral part. The co-axial magazine is divided into two sections each having a separate lid. Loading is simplified as there is no feed sprocket to negotiate in the dark. Six inches of film is fed through a light trap into the take-up compartment. From this stage the entire loop forming procedure is made in the light.
VIEWFINDER EXIT PUPIL SHUTTER. GELATINE HOLDER. UNEXPOSED FILM INDICATOR SAFETY CATCH FOR MAGAZINE RELEASE LEVER. MOTOR “LOSS OF SYNCHRONISATION” INDICATOR. MAGAZINE RELEASE LEVER. MOTOR ELECTRONICS MODULE. CRYSTAL MODULES 25 FRAMES/SEC 24 FRAMES/SEC FIG. 9. CAMERA AND MOTOR MODULE DETAIL 3.3. THE MOTOR 3.4 THE BATTERY. The motor takes a load of 0.8A at 12V at an operating temperature of 200C (680F) under full load.
FIG. 10. CHARGER WITH BATTERY IN POSITION. 3.5. THE CHARGER This is fitted in a plastic case and supplied with suitable cable. It operates from mains supplies. There is an automatic cut out at full charge. A safety fuse (0.8 amp) has been inserted Into the circuit for protection against overload. Spare fuses are kept under the two chrome studs in the base of the charger. 3.
Side Mounting (Code MIPSI) enables a hand grip to be fitted to the side of the camera when the pilotone module is not fitted. This mounting contains a sliding ON/OFF switch for camera start. Pilotone Module (Code PI MOD) can be fitted instead of the side mounting. This also contains a sliding ON/OFF switch for camera start, and location for a side fitted handgrip is provided. The pilotone module performs the following functions: a) generates a pilotone signal for 50Hz at 25 f.p.s. 60Hz at 24 f.p.s.
SPARE GELATINE FILTERS. COIN OPERATED ROTARY SELECTOR SWITCH. 60 HZ, 24 FRAMES/SEC 50 HZ, 25 FRAMES/SEC 100 HZ, 25 FRAMES/SEC FIG. 12.
4. OPERATING INSTRUCTIONS When preparing the camera for filming the following procedure should be adopted. 4.1. CHARGING THE BATTERY Select the appropriate mains tapping on the back of the charger. Slide the battery into the charger ensuring that the red dot on the front of the charger faces the red dot on the battery. Ensure that the indicator lamp comes on when plugged into the mains. The battery will charge to full capacity in about 30 minutes.
4.5. REMOVING MAGAZINE FROM CAMERA BODY Slide the safety catch outwards. Hold the top of the magazine with one hand and the camera body with the other. Press the lock release lever with the index finger. Pull the magazine down and back to clear the camera. FIG. 14. CAMERA/MAGAZINE LOCATION. 4.6.
FIG. 16. FILM PATHS FEED SIDE FIG. 17.
Note: 1) Before attaching magazines, always recheck the loops and the additional frame in the lower loop as described in section 4.6-b. 2) Fit dust caps to magazines not in use. 4.8. FITTING THE HANDGRIP FIG. 18. UNEXPOSED FILM INDICATOR. Unscrew the knurled ring. Screw the handgrip into the hole provided for that purpose at the base of the camera. Adjust the handgrip to a comfortable gripping position and lock in that position by turning the knurled ring.
5. ESSENTIAL PRECAUTIONS 1. Ensure that all the dust covers and protective plates etc. are fitted when the camera is not in use. 2. Check that the magazine loops are set correctly when loading. 3. Check the aperture plates and film path for cleanli ness (remove emulsion dust). 4. Do not use loosely wound film stock on core loads. 5. Check the concentricity of the daylight spools to avoid noise and jamming. 6. Check the correct fitting of the filter slide, i.e. tapered edge facing forward. 7.
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