International photographer (Jan-Dec 1934)

July, 1934 T h e INTERNATIONAL PHOTOGRAPHER Twenty-seven can be done . . . until something new comes along to help you." Those were prophetic words, for since then, a great deal has "come along" — the photo-electric cell, electrical recording, electrical amplification, synchronous motors, the glow-tube and what not. And through it all, sleeps Thomas Alva Edison who started it all . . . The GRAND "old man," the genial pal of all who worked with him . . . not as he slept on that slab of zinc sheeting as I saw him, but among the immortals, like him Who ivraps the drapery of his couch About him and lies down . . . with the Patriarchs of the infant world, With king, the powerful of the earth, The wise, the good. MINIATURE CAMERA PHOTOGRAPHY (Continued from Page 11) the room in which the tank is placed is warm, the temperature of the solution will be very little affected. When a metal tank is employed, the temperature of the solution contained in it will rise very rapidly when the tank is placed in a warm atmosphere. I have both a metal Reelo tank and a bakelite Correx tank, and on one occasion I found use for both. The paraphenylene-diamine developer I was using had been freshly prepared with warm water and the roll of him had been loaded in the bakelite Correx tank. It was a warm day and no refrigerator was at hand with which to cool the solution. I poured it into the Reelo tank and placed the latter in a pan ; put both under a tap allowing the cool water to flow into the pan. The developer in the metal tank cooled in a surprisingly rapid time. It was then poured into the Correx tank. I have subsequently used this procedure on a few more occasions. Local paper development : At the beginning of this article I explained the use of shading as a means of producing successful prints from negatives portions of which are relatively dense. On some occasions negatives will be encountered in which there are small dense portions which are so situated in the negative as to render shading impractical. Such dense portions can be brought out in the print by local development. The paper is exposed and then placed in the developer until the print is normally developed — the portion of the print corresponding to the dense part of the negative will not exhibit sufficient detail. The print is rinsed, the excess moisture blotted off and we are ready to apply local development to the portion in question. The developer should be applied with a camel's hair brush or a tuft of cotton. It would expedite matters if glycerine or syrup is added to the developer to render it more viscous, thereby reducing its tendency to spread, to a minimum. With a sufficient amount of such materials added we can be assured that the developer will staj where it is placed. When the portion to which local development has been applied has been sufficiently brought up, the print is again rinsed and placed in the hypo for fixing. Leitz Illumination Control: Many miniature camera photographers prefer the use of chloride (contact) papers because of the greater amount of illumination they allow in the darkroom, the larger number of degrees of contrast in which they are obtainable, and also the fact that they are less expensive. With the 50 or 75-watt lamps supplied with most enlargers, their use is out of question because of the insufficient amount of light present to give a proper exposure in a reasonable time. Many photographers have inserted photoflood lamps in their enlargers. Such lamps are best used with a rheostat both to prolong the life of the lamp, and to keep the illumination of the lamp down when focusing, to prevent the lamphouse from becoming overheated. The Photoflood lamp generates a comparatively large amount of light. E. Leitz offer their Illumination Control for this purpose. This device can be used only on a 1 10-120 volt current, either A.C. or D.C. (alternating or direct current). Seven luminosities are possible and it can be either placed on a table or fastened to the wall. ORDERS ARE COMING FROM ALL PARTS OF THE WORLD The use of Fred Wesrerberg's CINEMATOCRAPHER'S BOOK OF TABLES will make your job worth more by saving time and assuring accuracy. $1.00. ANY DEALER or 1605 Cahuenga Ave., Hollywood Cables: ArrReeves Francais Deursch Espanol Svenska "ArtReeves rr Automatic Speed Control Motor. Especially designed RICHT SIDE UP focusing tube. Twin-fidelity optical unit. Tachometer. Shuttle SILENCED. SINGLE SYSTEM SOUND Built into your Bell & Howell Camera Write for particulars. Motion PicTure/^ojjipmemT(o. |Tq 6A 5 NORTH MARTEL AVE CABLE ADDRESS ARTREEVES Phone: WYoming 4501 HOLLYWOOD, CALIFORNIA, U'SA Please mention The International Photographer when corresponding with advertisers.