The Cine Technician (1943 - 1945)

Record Details:

Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

THE CINE-TECH X I C I A X July— August, 1944 Edited by A. E. Jeakins TECHNICAL ABSTRACTS The Fastax High-Speed Camera (C. L. Strong, American Cinematographer, August, 1943). The Fastax camera was designed by the Bell Telephone Laboratories primarily as an instrument for analysing the performance of telephone equipment, electric relays, switching devices, etc., which move too rapidly to be studied by normal visual methods. There are two models of the Fastax, taking 8mm pictures and 16mm pictures respectively. The 8mm camera has a top-taking speed of 8,000' frames a second. (The well-known Eastman ERPI camera has a speed of 2,500 frames a second). The camera is of simple and robust design. The film comes off the 100 ft. feed spool under an idling roller round the 20 tooth driving sprocket and on to the take-up spool. The lens is a standard 2" 1.2. Framing and focussing are done by a prismatic finder which picks up the image at the focal plane through a hole in the sprocket roller and projects it right way up on a ground glass at the rear of the camera. The film movement is non-intermittent. A 4 or 8-sided glass prism with parallel opposite faces takes the place of the conventional rotating shutter and intermittent movement. An exposure slit is provided in front of and behind the prism. The prism rotates in synchronism with the film sprocket and the image is displaced by the refraction and rotation of the prism so that it travels in step with the film across the exposure slit. When the prism reaches the point where the light-rays might strike two adjacent prism faces, the prism housing blocks the light from the film and forms the frame line. When the camera is running at its highest speed the prism rotates at 60,000 r.p.m. and the film is travelling through the camera at 70 m.p.h. Duration of exposure with the 4-sided (16mm) prism is about 83 millionths of a second and with the 8-sided (8mm) prism about 33 millionths of a second. Among the many applications of the camera have been high-speed pictures in Kodachrome of the production of speech by the vocal chords and shots taken by polarized light of stress and impact conditions in transparent materials. Mitchell Background Projector (E. J. Tiffany. American Cinematographer, October, 1943). An outstanding feature of the new portable background projector produced by the Mitchell corporation is its silent operation which does away with the necessity for using a booth or blimp. When working at a normal distance from the background screen no noise is picked up by the sound system. The projector head consists of a film moving mechanism, upper and lower thousand foot magazines and interlocking motor drive system rnounte on a base plate. The head can be rotated through an angle of 18U° whilst in operation. The lens Bausch and Lomb f.m super cinephore, can be focussed by the cameraman by remote contrr worked through a Selsyn motor. The threading of the projector is similar to a Mitchell sound camera. The movement can be removed easily and replaced by an auxiliary aperture plate for lining-up the arc and size of picture. The magazines ai-e equipped with a reverse clutch so that the projector can be run backwards. A water-cooled cell prevents the heat falling on the film from becoming too intense The lamp house is designed to accommodate i 120-180 amp. arc. The projector head and lamp house are mounted on a base plate which can be rotated 360° and tilted 10° up or down. The height of lens can be altered between 58 inches and 72 inches from tl. floor by a control wheel. A control panel in base plate permits the projector to be operate . forwards or backwards, independently or interior ked with the distributor as desired. The S] of the projector can be controlled by a rhe. while out of interlock. The whole equipment is mounted on a sturd; base running on castors, which are jacked up who:. the projector is set in its operating posit Dhnensions ai"e : Base 61 feet bv 4i feet. H< _ 7^ feet. Weight about 2,000 lbs. FOR SALE A Few Boi \n Volumes " THE CINE-TECH XIC I AX " Volume I 1935 Volume II 1936 7/6d. EACH