International photographer (Jan-Dec 1934)

April, 1934 The INTERNATIONAL PHOTOGRAPH E R Twenty-nitu This device fits into the clip of the camera so that its eyepiece is at right angles to the lens. In using it the photographer is facing at right angles to the direction of the lens and the subject is therefore unaware of the fact that he is being photographed. To the photographer who is thoroughly familiar with his miniature camera and can bring it into action at a second's notice, indulgence in candid photography should yield some interesting results. A New Camera: The Rolleicord, a small brother of the popular Rolleiflex camera, is now with us. Essentially, the Rolleicord is built along the same lines as the Rolleiflex — a twin lens camera in which one of the lenses is employed as a finder lens. Being a product of Franke & Heidecke, the fact it is a precision instrument is precluded. The Rolleicord is equipped with a Zeiss Triotar f:4.5 and includes such Rolleiflex features as compensation for parallax, absolutely rigid focusing mechanism, frame finder for sport pictures, etc. It is manufactured to sell at a lower price than the Rolleiflex camera. Although the Rolleicord presents exactness and precision throughout, the Rolleiflex is possessed of additional advantages such as a faster lens, Zeiss Tessar taking lens, joint viewing window for shutter and diaphragm readings, alternative use of plates and cine film, direct focus ing on ground glass screen for reproductions, etc. Since it possesses many of the advantageous features of the Rolleiflex, the reasonable price of the Rolleicord should prove popular with miniature camera enthusiasts. Priii tiny Coarse-Grained Negatives: At times through some uncontrollable factors, or some oversight, a valuable negative is not processed properly with the result that its grain is extremely coarse and reasonably sized enlargements cannot be made from it. Two methods may be utilized to minimize the grain in order to obtain a successful print. The first, which is recommended by the Eastman Kodak Co., is to employ a substance which has the same refractive index as the film base. Glycerine answers this purpose. Some glycerine is poured on the negative carrier, the negative being placed on it. A little more glycerine is poured on top the latter. The negative carrier is then closed and a little pressure applied to eliminate air bubbles. Remove all excess glycerine that oozes out from the carrier, place the latter in the enlarger, and proceed to print. The negative is subsequently washed to remove the glycerine and is then hung up to dry. The second method is to make another larger negative. A print of the negative is made upon film such as commercial ortho film. The print is processed, after which it is placed in the enlarger and a small enlargement made upon the same type of film as was used to produce the contact print. This enlargement is now processed with extreme care, using fine-grain developer. Prints on paper are made from this new fine-grain processed negative. This method can also be used in cases where retouching is necessary such as in portraits. The miniature negative is too small to allow retouching. Quick Drying Aids in Fine Grain: It has been definitely proven that the rate at which the film is dried is also a factor in determining the fineness of the grain in the negative. Fast drying is productive of fine grain, whereas if drying is prolonged over a long period coarse grain is apt to result. The first requisite to fast drying is free circulation; an electric fan will serve this purpose nicelv. Another agent which can be employed for this purpose is a volatile substance such as alcohol. After the film has been completely washed it is either dipped into alcohol for a minute or two and hung up to dry or it is passed through the folds of a chamois skin moistened with alcohol. Something New ... In Motion Picture Developing THE DAVIDCE DEVELOPING PROCESS 1.000 feet of film developed in only 50 gallons nt developer. Make your pictures live on the screen by developing to the maximum of gradation. No directional effect; greater color separation. Sound track developed by this method has cleaner, sharper striations, which produces clearer and better sound. Also made in combination units to take either standard or 16mm. film and in small units for amateur use. ■ For full particulars write to ROY DAVIDCE FILM LABORATORIES, LTD. 6701 Santa Monica Blvd. Hollywood, California Please mention The International Photographer when corresponding with advertisers.