Amateur Photographer & Cinematographer (1937)

July 21st, 1937 EWS AND REVIEWS N ITEMS OF GENERAL INTEREST FROM ALL QUARTERS. Instructions for processing paper films, together with illustrations of the Lancaster apparatus necessary for the processing, have just been issued in leaflet form by Messrs. Granville Gulliman & Co., Ltd., of Leamington Spa. The leaflet deals with the methods of drying, printing and enlarging from paper negatives, and also gives formulae for negative and print development. A copy of this leaflet may be obtained on application to Messrs. Granville Gulliman & Co., Ltd., at the above address, or at 13, Gray’s Inn Road, W.C.i. The Hounslow Photographic Society, whose first General Meeting was in January this year, will be holding its first Annual Exhibition on September 15th and 16th, 1937, at the Council House, Treaty Road, Hounslow. Any amateur photographers living in the district (Hounslow, Isleworth, Osterley, Spring Grove and Lampton) who are not already members of a photographic society should write to the Secretary, Mr. A. D. Barden, 357, Whitton Dene, Isleworth, Middlesex, who will be pleased to welcome any new members. Great activity has been shown re¬ cently by the Eltham Cine Society, who have now been actively engaged in filmmaking for just over two years. Mem¬ bers are now experimenting and working on the problem of synchronising natural sound to the home cine film, and a satisfactory method has been effected for amateurs. Any amateur cinemato¬ graphers or societies wishing to make sound films should write to the Hon. Secretary for full particulars, or visit the Studio when shooting is in progress. The Hon. Secretary is Miss V. D. White, 36, Craigton Road, Eltham, S.E.9. Camera-users who have difficulty in focussing close-ups owing to inability to make sufficiently accurate estimates of distance will find the "Trofi” range¬ finder invaluable. This little instru¬ ment, which is less than 2J in. long, is a split-field range-finder of base 4.5 cm., graduated for distances from 3 ft. to infinity. On test we found it accurate, and it is much more sensitive than its small size might suggest. At 3 ft. an error of less than 2 in. is very readily detected even with a subject containing no strongly-marked vertical lines. A zero adjustment is provided to allow for resetting the instrument if this should at any time become necessary, and there are shoes of various shapes that can be fixed to the camera, and into which the range-finder can be slipped when desired. A more elaborate model, the “ Karma,” offers the convenience of a direct-vision optical finder built into the range-finder casing, which is extended to a length of 3l in. The finder is large and gives a brilliant image with well-defined bound¬ aries, the picture-shape being approxi¬ mately that of the standard V.P. size (4X6.5 cm.). The “Trofi” costs 21s. and the “ Karma ” 32s. 6d., and both are imported by Mr. R. E. Schneider, of 46, Farringdon Street, E.C.4, to whom application should be made for further particulars. Messrs. R. F. Hunter Ltd., of 51, Gray’s Inn Road, W.C.i, have just published their 1937 catalogue of cam¬ eras and accessories. This list deals in considerable detail with the Rolleiflex and Rolleicord miniature twin-lens re¬ flexes, the Heidoscope and Rolleidoscope stereoscopic reflex cameras, and the Purma Special miniature camera. It covers also a very wide range of accessories for photography and cine¬ matography, including the Duto softfocus attachment, the Tempiphot ex¬ posure meter, the Nikor all-metal de¬ veloping tank, and the well-known Celfix cine screens. The list may be obtained post free on request from the address given above. A competition for amateurs for the best cat photographs, either with or without other animals humans, views, etc., is being organised by “ Cats and Kittens,” a monthly journal published by Bernard Bartley Ltd., Denmark Th[ amateur photographer p 6 CINEMATOGRAPHER a House, Denmark Street, W.C.2. Cash prizes of Three Guineas, Two Guineas and One Guinea respectively are offered, and each entry must be accompanied by a photographic competition coupon to be found' in the pages of the magazine. The closing date is September 30th. Mr. Cyril Stuart Woolley, 27, Burford Road, Bickley, Kent, is the latest winner of the Wallace Heaton weekly competition, full particulars of which appear regularly in our advertise¬ ment pages each week. The title of the print was " Ann.” The Second Indian International Salon of Photographic Art will be held at the Town Hall, Bombay, promoted by the Camera Pictorialists of Bombay. The last day for receiving entries is the 15th January, 1938, and these, with fees, should be sent to Mr. N. B. Cooper, Hon. Secretary, Camera Pictorialists of Bombay, 53, Nicol Road, Ballard Estate, Bombay, India. The latest addition to the well-known " N.P. Handbooks,” published at is. each, is " Camera Lenses and Shutters,” by R. M. Fanstone. This little book deals simply with the elementary prin¬ ciples of lenses, the aberrations from which they can suffer, and discusses also the uses of lenses of the various types ; and the book winds up with a discussion of the various types of shutters. ‘ ‘ Camera Lenses and Shutters ” is obtainable from any bookseller or photographic dealer, or post free for is. 2d. from The Fountain Press, 19, Cursitor Street, E.C.4. FACTS and FORMULA J~\NE or more items of practical value to the amateur photographer are given under this heading in every issue. ^ The series from No. i to 61 included all standard chemical and optical formulae and practical instructions, etc., for the principal processes. The present series (starting with No. 62) will include all the formulae issued by the leading manufacturers of plates, films and papers. These facts and formulae are intended to be cut out and pasted on the thin cards of the standard size, 5x3, supplied for card index cabinets. The collection, when completed, will form a concise guide to photographic practice that every regular worker will value for reference, and for that reason no copies should be missed. “ A.P.” filing cabinets have been specially prepared for this card index and are now ready. The size of the box is 5^ X 3^x3 and each is supplied complete with a set of alphabetical index cards and 150 cards for pasting on the “ Facts and Formulas.” They are obtainable from our publishers, Messrs. Iliffe & Sons Ltd., Dorset House, Stamford Street, London, S.E.i. Price 2s. 6d. post free. 84. Makers’ Formulae : Developers for Agfa Papers— (2) Agfa 108. Contrast Developer. Metol . . . . . . 44 grs. (5 grm.) Hydroquinone . . . . 53 grs. (6 grm.) Sodium sulphite (anhydrous) 350 grs. (40 grm.) Potassium carbonate . . 350 grs. (40 grm.) Potassium bromide. . 18 grs. (2 grm.) Water . . . . . . 20 oz. (1,000 c.c.) If crystallised sulphite is used, take double above quantity. This developer, which is not diluted before use, gives contrasty results on gaslight, Lupex, Brovira, and Portriga warm-tone paper. At 05° Falir. develop gaslight and Lupex papers for 1 min., Portriga for 1 to 1J mins., and Brovira for 1£ to 2 mins. Agfa 115. Blue-Black Developer. Metol . 18 grs. (2 grm.) Hydroquinone . . . . 53 grs. (6 grm.) Sodium sulphite (anhydrous) 220 grs. (25 grm.) Sodium carbonate (anhy¬ drous) . . . . . . 290 grs. (33 grm.) Potassium bromide . . .. 4J grs. (0.5 grm.) Water up to.. .. .. 20 oz. (1,000 c.c.) If crystallised sulphite is used, take 440 grs. (50 grm.). If crystallised carbonate is used, take 780 grs. (89 grm.). The solution may be made up with half the above quantity of water if desired, and diluted before use with its own bulk of water. This developer gives blue-black tones on gaslight and Lupex paper, the time of development at 65° being 45 secs. It may also be used with Verdex paper, which requires 2 to 2| mins, development. Agfa 120. Brown-Tone Developer. 210 grs. (24 grm. Hydroquinone Sodium sulphite (anhy¬ drous) Potassium carbonate Potassium bromide. . Water 525 grs. (60 grm.) 700 grs. (80 grm.) 18 grs. (2 grm.) 20 oz. (1,000 c.c.) If crystallised sulphite is used, take double the above quantity. For use, dilute with 2 to 5 times its volume of water according to tone required. Exposure should be 1& to 3 times that which would be given for normal development in Formula 100. Time of development for brown-black tones : with Portriga warm-tone paper, 2 to 6 mins. ; Lupex Chamois paper, 2 mins. ; Brovira, about 5 mins., all at 65° Falir. 94 57