Amateur Photographer & Cinematographer (1933)

March ist, 1933 iHt AMATEUR PHOTOGRAPHER Ti 6 ClhEMATOGRAPHER o it all, and a lack of climax which would make the picture producer turn it down forthwith. It is only when one realises the patient work which the film entailed that one becomes enthusiastic. To get the necessary sequence it meant making one exposure on the film every sixty seconds or so, and Dr. Canti de¬ vised an apparatus whereby, this exposure was made and the film automatically wound on for the next exposure one minute ahead. But sometimes the mechanism failed, and when it did fail an alarm bell was rung. It goes without saying, to those who know anything of these matters, that the majority of the alarms took place in the small hours of the morning — for the work had to be continuous day and night — and Mrs. Canti took turns with her husband in getting out of bed to adjust the apparatus when these alarms were heard. Things less heroic than that have received greater acclaim. The Film and the Empire. Sir William Furse, the director of the Imperial Institute, told the Royal Photographic Society that a film library had been formed at the Im¬ perial Institute, and under the special auspices of the Empire Marketing Board. The services of a talented young producer have been secured, and some very fine work illustrating the scenery and resources of the Empire has already been done. The films are sent out as far as possible to schools, though also to societies which request them, and Sir William Furse stated that be¬ tween four hundred and five hundred schools are at the moment hungrily asking for these films week after week. Up to now they have only got about six hundred film subjects, so that it is not easy to satisfy those who clamour for them. But he remarked how wonderfully the cine¬ matograph is coming into the schools as a method of teaching and as a supplement to other teaching. The Imperial Institute also possesses in its galleries a very large number of photographs of great interest, also dioramas, some of them reaUy works of art. The A mateur Photographer” EXPOSURE TABLE— March 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 9 to 10 a.m. or from 2 to 3 p.m., double these exposures. From 7 to 9 a.m. or from 3 to 5 p.m., treble them. Subject. Ordinary. Medium. Rapid. Extra Rapid. Ultra Rapid. Open seascapes and cloud studies . . 1/20 sec. 1/30 sec. 1/60 sec. 1/80 sec. 1/100 sec. Open landscapes with no very heavy shadows in foreground, shipping studies or seascapes with rocks, beach scenes, snow scenes with no heavy foreground . . 1/12 1/18 1/35 1/50 > » 1/60 yy Ordinary landscapes and landscapes with snow, open river scenery, figure studies in the open, light buildings, wet street scenes 1/5 1/8 » » 1/15 1/20 1/25 yy Landscapes in fog or mist, or with strong foreground, well-lighted street scenes . . iM 1/6 1/12 1/15 1 y 1/20 yy Buildings or trees occupying greater portion of picture 1/2 1/4 1/5 1/6 yy 1/8 yy Portraits or groups taken out of doors, not \l 1/2 1/3 1/4 too much shut in by buildings . . 1 y y Portraits in well-lighted room, light sur¬ roundings, big window, white reflector . . 5 secs. 4 secs. 2 secs. 1| y y 1 yy As a further guide we append a list of some of the best known makes of plates and films on indicate the speeds referred to above. The hypersensitive panchromatic plates Ultra_ Rapid. Ilford, Iso-Zenith. the market. Tdby have been divided into groups, which approximately and films require less exposure than the ultra^rapid. Agfa, Special Portrait. „ Super-speed Film. „ Ulira Special. Barnet, Press and Super Press. „ XL Super-speed Ortho. „ Soft Panchromatic. „ Studio Fast. „ Ultra Rapid. Criterion, Enelite. Eastman, Par Speed Cut Film. „ S.S. Cut Film. ,, S.S. Pan. Film. Gevaert, Super Sensima. „ Sensima Fast. „ Sensima Ortho. „ Super Chromosa. „ Roll Films and Packs. Hauff, Ultra Rapid. „ Ulcroma. „ Ultra Roll Film and Pack. Herzog, Ortho-Isodux Roll Film. » „ „ Film Pack. Ilford, Golden Iso-Zenith. Hypersensitive Pan. Plates and Films. „ Portrait Film (Ortho fast). „ Monarch. „ Press. „ S.S. Ex. Sens. „ Zenith Ex. Sens. „ S.G. Pan. Illingworth, Fleet. „ Super Fleet. „ Super Fleet Ortho. „ Pan. Fleet. Imperial, S.S.S. Press Ortho. Eclipse. Eclipse Ortho Soft. Eclipse Soft. Eclipse Ortho. Eclipse Pan. Soft. Kodak, Verichrome Film. Marion, Record. „ Iso Record. Paget, Ex. S.R. Rajar, Super Speed. Selo, Selochrome Roll Film Film Pack. ,, Selo Pan. Roll Film. Wellington, Anti-Screen. „ X Press. Extra Rapid. Agfa, Chromo. „ Isolar. Extra Rapid. Isolar. Iso Rapid. „ „ Chromo. Roll Film. Barnet, S.R. Pan. „ Studio Ortho. Criterion, Iso E.R. ,, Portrait. „ Roll Film. „ Special E.R. Ensign, Roll Film. Gevaert, Filtered Ortho. and Gevaert, Chromosa. „ S R. „ Regular Cut Film. Hauff, Analo-Flavin. „ Extra Rapid. ,, E.R. Ortho. „ Roll Film and Pack. Ilford, Auto Filter. „ S.R. Pan. „ Pan. Film. „ Rapid Chromatic. „ Film Pack. Imperial, NonFilter (new series). „ Eclipse Pan. B. „ S.S. Ortho. Kodak, Roll Film and Film Pack. Pathe, Roll Film. Selo, Roll Film. Zeiss Ikon, Roll Film and Film Pack. Rapid. Barnet, S.R. „ Self-screen Ortho. Criterion, Extra Rapid. Hauff, Ortho Anti-Halo. Ilford, Screened Chromatic. „ S.R. „ Commercial Ortho Film. Imperial, Non-Filter. S R " sIr! Ortho. Kodak, Cut Film. Lumiere, Extra Rapide. ,, Instantan^e. „ Pelliculaire. Medium. Ilford, Empress. „ Chromatic. Ordinary. Barnet, Ordinary. Criterion, Orlinary. „ Ordinary Iso. Gevaert, Ordinary. Ilford, Ordinary. \ „ Rapid Access Pan. Imperial, Ordinary. „ Pan. Process. 6 192