American cinematographer (Jan-Dec 1963)

QUESTIONS & ANSWERS Continued from Page 80 tion for the 35mm B&H Eyemo cam¬ era. It’s rather expensive: $1,200. We refer you to this company’s advertise¬ ment on page 14 of our January, 1963, issue, in which this modification is illustrated and described. We have no knowledge of any doit-yourself procedure by which the camera owner or anyone but a quali¬ fied camera technician could modify the Eyemo camera for this purpose. Q. What is the Panacolor Process ? / have heard that it involves only black-and-white film stock in the pro¬ duction of release prints? — J. D. McN., Sydney, Australia. A. The Panacolor Process is a film printing method which, in a fully-automatic and continuous 3-stage printing and chemical process, produces color movie release prints ready for exhibi¬ tion. It is the only process which re¬ produces color images on black-andwhite positive film stock. Color fidelity is controlled at time film is being printed since the process has the unique feature of permitting easy and rapid adjustments of color values and scene-to-scene light densities. Q _ Why do some films show more grain, when projected, than others? What, exactly, is grain and its cause? -J. H. H., Portland, Ore. A. The grain in any film is there all along, but becomes more apparent with underexposure. The impression of grain in an underexposed color scene is greater due to the lack of dye. The extent of visible grain in any scene is determined by the scene con¬ tent. Also, some types of scenes show grain worse than others. Q. / am advised that the Sylvania Sun Gun, Professional model, pro¬ duces about 5000 watts of illumination while consuming only 10 amps of cur¬ rent. Is it possible to use six or more Sun Guns to light a set in conjunction with a poiver converter such as the Colortran? Also, if the converter can be used on location interiors as a means of avoiding overloading the house circuits ( and using other light¬ ing equipment) can the intensity of the Sun Guns be boosted?— H. L. F., Berkeley, Calif. A.-— The Professional Sun Gun draws 1000 watts of power with a cur¬ rent drain of 8.5 amperes yet pro¬ duces efficient photographic illumina¬ tion equivalent to 5000 watts. This is due to the high efficiency of the quartz-iodine lamp unit and of the reflector-lamp combination. The Colortan Converter is rated at 20 amps. This means that two pro¬ fessional Sun Guns may be used on one converter at an input voltage of 120 volts. Power of the Sun Guns may be boosted only to the extent that 20 amps current drain is not exceeded when used with a converter. Beyond this point, the circuit-breaker of the con¬ verter will open. Q.— — Using 16mm Commercial Ektachrome film with a No. 85 filter for daylight correction. I am interested in obtaining day-for-night effects. Would the bluish cast resulting from using this film in daylight without the 85 filter be sufficient to gain this effect when the film is purposely underex¬ posed? I am also using Extachrome High Speed (ER 7257 and 7258) on this filming assignment with which / also wish to achieve day-for-night Continued on Page 120 Acmade Foot-Operated Splicer with Tungsten Tipped Blades > ' IteiiP Combination 16mm-35mm Model $1495 This splicer is constructed, as is usual with ACMADE products, of the finest mate rials and workmanship. All castings are of the best quality and the top body and cutter arms are seasoned to prevent dis¬ tortion after machining. The machining is carried out to limits of± .0005" in order that the cutter blades shall close in a dead parallel manner. The cutter blades are made from stainless steel with Tungsten Carbide inserts, and afterwards ground lapped and polished to a limit of ± .0002" thickness and the cutting edges relieved by 1°. The Tungsten Carbide inserts will have indefinite life and will not require sharp¬ ening as with other types. A heater unit is installed in the top body of the machine. The top light in a well glass fitting is at¬ tached to the body of the machine and also an inspection light in the waste bin to¬ gether with cement bottle and brush. A scraper block is supplied and also a scraper block setting jib and support shelf rubber-covered. The whole machine is fin¬ ished in first quality grey hammer and all metal parts other than cutter blades are hard flash chromed. ACMADE MARK II EDITING TABLE six. f.o.b. New York Makes Editing Easy! Operation of this simple, efficient editing machine can be mastered in minutes. Con¬ tinuous movement provides absolute safety for your film. Instant controls and de¬ clutching allows up to 50% increase speed and efficiency in editing. Any combination of 2 or 3, 16mm or 35mm channels, plus mag¬ netic and optical sound available. WRITE FOR DETAILED BROCHURE Serving the World’s Finest Film Makers Florman & Babb c. 68 West 45th Street New York 36, N . Y. MU 2-2928 Another Fine Product From ACMADE AUTOMATIC BUTT SPLICER Cuts, Splices, Applies Magic Mylar Automatically.' 4 tive, magnetic other bases. Now, with no fuss, mess or waste, it is possible to splice, repair, butt-splice, or strengthen ' splices on all 1 types of film — positive, negaeven duPont Cronar or 4 The cutting arm, H shown in opera¬ ting position, is used by press¬ ing the chrome button for cut¬ ting both sides of the film si¬ multaneously. The film, has been registered on pins horizontal channel. The cutting blade ily replaced. in the is eas if The splicing tape is regis¬ tered on pre¬ cision pins and held in place until automati¬ cally applied to the film by swinging the arm over and pressing the chrome button, cutting the adhesive and applying it — in perfect register to the film. Model 35 for 35mm. Model 16 for 16mm— *295 82 AMERICAN CINEMATOGRAPHER, FEBRUARY, 1963