Amateur Photographer & Cinematographer (1936)

August 5th, 1936 ihi amateur photographer 6 CINEMATOGRAPHER g He thanked goodness (or words to that effect) that the majority of the Fleet Street men still stuck to their quarter-plate or 9x12 cm. Press cameras and used plates that gave decent negatives fit for en¬ larging ! What do our miniature workers have to say to that ? Sir Henry Wellcome. The world of scientific research and enterprise is poorer by the death of Sir Henry Wellcome. He was probably best known to photo¬ graphers as one of the founders of the well-known firm of Burroughs Wellcome & Co., of “ Tabloid ” fame, but this side of his work represented but a small part of his many and far-reaching activities. Born eightytwo years ago in Wis¬ consin, U.S.A., he became a natu¬ ralised British subject in 1910, and was created a knight in recognition of his manifold and munificent services to research in medicine and its allied sciences. His life story might fittingly be called a romance of science and business. The firm of Burroughs Wellcome was founded in London in 1880, and, besides the chief works at Dartford, now has works, offices and ware¬ houses in most of the great centres of commercial activity throughout the world. In addition to the devel¬ opment of applied science as carried on in the laboratories at the Well¬ come Chemical Works, he established a series of research institutes and museums. These include The Well¬ come Physiological Research Labo¬ ratories in London, The Bureau of Scientific Research and The Museum of Medical Science, The Entomo¬ logical Field Laboratories and The Wellcome Research Institution in Euston Road. He established The Wellcome Tropical Research La¬ boratories, Khartoum, The Medical Hospital Dispensary at Mengo in Uganda, The Lady Stanley Maternity Hospital, and has equipped many archaeological research expeditions besides contributing generously to an endless number of other medical and scientific enterprises. The A mateur Photographer** EXPOSURE ^ ABLE — AugUSt EVERY MONTH a brief exposure table will be provided for the assistance of our readers in their practical work. A glance at the current approximate exposures as here given will serve as a reliable guide for most purposes. The subjects will be varied to suit the time of year. The following exposures will serve as a working guide for any fine day during the month, between the hours of 10 in the morning and 2 in the afternoon, with the sun shining, but not necessarily on the subject. Stop used, f/8. The exposure should be doubled if the sun is obscured, or if stop f/ii is used. For f/i6 give four times the exposure. For f/5.6 give half. From 8 to 10 a.m. or from 2 to 4 p.m. double these exposures. From 6 to 8 a.m. or from 4 to 6 p.m., treble them. From 5 to 6 a.m. or 6 to 8 p.m., about four times these exposures will be required. N.B. — The times given above are by “ sun time." The exposures, therefore, which are laid down as suitable for 2 to 4 p.m., for instance, will be those to be given between 3 and 5 p.m., by the clock, during “ summer time." Subject. Ordinary. Medium. Rapid. Extra Rapid. Ultra Rapid. Open seascapes and cloud studies . . 1/30 sec. 1/45 sec. 1/90 sec. 1/120 sec. 1/150 sec. Open landscapes with no very heavy shadows in foreground, shipping studies or seascapes with rocks, beach scenes . . 1/18 1/30 1/50 1 » 1/70 11 1/90 11 Ordinary landscapes with not too much foliage, open river scenery, figure studies in the open, light buildings, wet street scenes 1/10 1/15 1/30 1 » 1/40 1 1 1/50 11 Landscapes in fog or mist, or with strong foreground, well-lighted street scenes . . 1/8 1/12 1/25 1/30 1 1 1/40 11 Buildings or trees occupying greater portion of pictures, river scenes with heavy foliage 1/4 1/6 1/10 11 1/15 1 1 1/20 11 Portraits or groups taken out of doors, not too much shut in by buildings . . 1 2/3 » 1 1/3 11 1/4 11 1/5 11 Portraits in well-lighted room, light sur¬ roundings, big window, white reflector . . 4 secs. 3 secs. 11 11 1 1 1 3/4 11 As a further guide we append a list of some of the best-kno vn makes of plates and films on the market. They have been divided into groups, which approximately indicate the speeds referred to above. The hypersensitive panchromatic plates and films require less exposure than the ultra-rapid. Ultra Rapid. Agfa, Special Portrait. „ Isopan ISS Film. „ Super-speed Film. „ Isochrom Film. „ Ultra Special. Barnet, Press and Super Press. „ XL Super-speed Ortho. „ Soft Panchromatic. „ Studio Fast. „ Ultra Rapid. Eastman, Par Speed Cut Film. „ S.S. Cut Film. „ S.S. Pan. Film. Gkvaert, Super Sensima. „ Sensima Fast. „ Sensima Ortho. „ Super Chromosa. „ Roll Films and Packs. Ilford, Golden Iso-Zenith. Ilford, Iso-Zenith. Kodak, Verichrome Film. Agfa, Iso Rapid Chromo. „ Hypersensitive Pan. „ Super Sensitive Pan. „ Roll Film. Plates and Films. Film. Barnet, S.R. Pan. „ Studio Ortho. „ Portrait Film (Ortho „ Panatomic. Marion, Record. Fast). Ensign, Roll Film. „ Monarch. „ Iso Record. Gevaert, Filtered Ortho. „ Press. Selo, Selochrome Roll Film and „ Chromosa. „ S.S. Ex. Sens. Film Pack. „ S.R. „ Zenith Ex. Sens. ,, Selo. Pan. Roll Film. „ Regular Cut Film. „ S.G. Pan. VoiGTLANDER, Illustra Film. Wellington, Anti-screen. Ilford, Auto. Filter. „ S.R. Pan. Illingworth, Fleet. „ X Press. „ Pan. Film. „ Super Fleet. Zeiss Ikon, Pemox Roll Film „ Rapid Chromatic. „ Super Fleet Ortho. „ Pan. Fleet. and Packs. Imperial, Non-filter (new series). „ Eclipse Pan. B. Imperial, S.S.S. Press Ortho. Extra Rapid. ,, S.S. Ortho. Kodak, Roll Film and Film Pack. „ Eclipse. Agfa, Chromo. „ Eclipse Ortho Soft. „ ,, Isolar. „ Ex^a Rapid. Pathe, Roll Film. „ Eclipse Soft. Selo, Roll Film. „ Eclipse Ortho. „ Isolar. Zeiss Ikon, Roll Film and Film „ Eclipse Pan. Soft. „ Iso Rapid. Pack. Rapid. Barnet, S.R. „ Self-screen Ortho. Ilford, Screen Chromatic. „ S.R. „ Commercial Ortho. Film. Imperial, Non-Filter. S R „ S.R. Ortho. Kodak, Cut Film. Medium, Ilford, Empress. „ Chromatic. ^ Ordinary. Barnet, Ordinary. Gevaert, Ordinary. Ilford, Ordinary. „ Rapid Process Pan. I.MPERiAL, Ordinary. „ Pan. Process. 134