International photographer (Jan-Dec 1935)

Ten The INTERNATIONAL PHOTOGRAPHER August, 1935 MINIATURE CAMERA PHOTOGRAPHY Sunday in the park: Leicaphoto made on Eastman Supersensitive Panchromatic Film developed in paraphenylenediamine-glycin. Photo by A. Wolfman. Sunset on the water provides excellent picture material. Photo by Karl A. Barleben, Jr. ^CRATCH-PROOFING Negatives. To the miniature camera photographer a scratch on the I negative is quite a detriment for when the latter is enlarged during printing the scratch is also magnified, necessitating retouching of the print. If the negative is called upon often to make prints it is more likely to become scratched, because of the greater amount of handling it receives. All photographers have valuable negatives which they desire to keep in good shape for an indefinite time, and it is usually the case that many prints are made from such negatives. It would be quite a boon if some process were available to the photographer whereby his negatives could be safeguarded against scratches and other mars that they would incur during ordinary use. The motion picture industry had such a process at its disposal for quite some time. It is known as the "Teitel's Scratch Proof Method," and it has not been made available to the miniature camera photographer. The necessary chemical solution with which the film is treated is put up in six ounce bottles as a concentrated solution, and is diluted with fifteen parts of water for use, the film being treated after it has been washed. The emulsion is hardened without affecting the cellulose base, rendering it immune to scratches and abrasions from ordinary use, and the treated negative will be preserved during its life without discoloration due to age nor melting or decay of the gelatine. For more detailed information about this process the photographer is advised to write to Kin-O-Lux, Inc., 105 West 40th St., New York City. Steadying the Camera. Due to the fact that the miniature camera is of such small size many photographers seem to have the idea that the use of a tripod is superfluous. On the other hand exercising care to keep the camera steady during exposure is extremely important with the small camera. A large camera because of its greater weight and bulk can be held more steadily during exposure, and the larger negative is usually not JVF OVIODA FILM VIEWING and REPRODUCING MACHINES ALL MODELS ON DISPLAY— FOR SALE— FOR RENT Illustrated Literature On Request MOTION PICTURE CAMERA SUPPLY, INC. 723 7th AVE., NEW YORK CITY CABLE: "CINECAMERA" subjected to a great degree of enlargement, so that any movement during exposure is not greatly magnified. This is not the case with the small camera for its comparatively little weight makes it easy to jar during exposure, making it advisable whenever possible to use a fast shutter speed. This does not infer that slower speeds such as 1/20 sec, 1/10 sec, etc., cannot be used with a miniature camera with success. Quite the reverse, many fine photographs have been made with the small camera at slow shutter speeds. However, some people may naturally not be able to hold the camera very steady, and there are still many photographers who haven't learned the simple trick of squeezing the release button with the finger instead of using the whole arm to effect the exposure, thereby moving the camera. If a cable release is available, and the photographer is not adept at pressing the shutter release button properly, the use of the cable release will allow the hand to be held free of the camera when tripping the shutter. However, a tripod insures steady results, especially when comparatively long exposures are made; so why not employ it whenever conditions permit. It is more important when lenses of long focal length are used, with cameras which permit the interchange of lenses. The longer the focal length of the lens the greater is the magnification of any movement of the camera during exposure. For the miniature camera there are many unique tinytripods which can be placed on a table, fence, etc., and then again the regular large tripod can be employed whenever it is convenient to do so. Perhaps this short discussion may have conveyed the thought to the photographer that the small camera cannot be relied upon to give sharp negatives showing no trace of movement during exposure, unless a compara r= | 'VARIABLE AREA RECORDERS^ P PATENT NO. 1985SM. OTHERS PENDING ' ALSO ^^ 35 mm to 16 mm ^^ fc | ym REDUCTION SOUND PRINTER J ■f AND 9 | ni SOUND EQUIPMENT ^ ' O Cable address CRSCO ^ > C.R. SKINNER MFG. Co. 125 HYDE STREET PHONE ORDUIAV 6909 » . San Francisco. California U. S. A. A | ™ Please mention The International Photographer when corresponding with advertisers.