Amateur Photographer & Cinematographer (1933)

IHI AmiEUR PHOTOGRAPHER t: 6 CINEMATOGRAPHER o May 3rd, 1933 mercury vapour lamp with the half¬ watt. Mercury vapour accentuates such things as freckles very de¬ finitely. Mercury vapour is also much faster than half-watt, and where an exposure of i sec. would be used with the former, an ex¬ posure of 4 or 5 sec. would be neces¬ sary with an equivalent half-watt. Mr. Shillibeer has found that people will not keep still for more than two seconds without getting “ a terrible glassy stare.” On Sending Them a Copy. We do not know how many photographers conscientiously send prints to the people whom they may include in their pictures when on travel, but one Liverpool photo¬ grapher, who went out recently to Corsica, told us that he made a point of sending even to that far-off isle a print to every Corsican way¬ farer who got within range of his camera when he was exposing. As Corsica is commonly supposed to be a land of brigands one wonders what is the reaction to these prints when the infrequent postman de¬ livers them to the brigands’ caves. This gentleman said that the trouble and expense brought its own reward in the shape of pretty and grateful letters from the aforesaid Corsicans. Some of the recipients even paid him the compliment of making a repeat order. Could he send twelve prints, which would be distributed among the members of the proud subject’s family ? One Corsican wench, of whom on her way from market he took a charming picture, desired something more than pic¬ torial satisfaction, and hankered after his wrist-watch as a keepsake. Seriously, however, photographers who are good enough to promise prints to those who pose for them, and, what is more, fulfil their promises — because an unfulfilled pro¬ mise is far worse than no promise at all — do make things easier for those who follow in their footsteps. The A mateur Photographer” EXPOSURE T ABLE — May 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. 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 ” summertime 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 y y 1/50 y y 1/70 y y 1/90 y y Ordinary landscapes, with not too much foliage, open river scenery, figure studies in the open, light buildings, wet street scenes 1/10 y y 1/15 y y 1/30 y y 1/40 y y 1/50 yy Landscapes in fog or mist, or with strong foreground, well-lighted street scenes . . 1/8 y y 1/12 y y 1/25 y y 1/30 y y 1/40 yy Buildings or trees occupying greater portion of picture 1/4 y y 1/6 y y 1/10 y y 1/15 y y 1/20 yy Portraits or groups taken out of doors, not too much shut in by buildings . . 1 y y 2/3 y y 1/3 y y 1/4 y y 1/5 y y Portraits in well-lighted room, light sur¬ roundings, big window, white reflector . . 4 secs. 3 secs. 4 secs. 1 y 3/4 y y As a further guide we append a list of some of the best known makes of plates and films on the market. Thev have been divided into groups, which approximately indicate the speeds referred to above. The hypersensitive panchromatic plates and Jtlms require less exposure than the ultra-rapid. Ultra Rapid. Agfa, Special Portrait. ,, Super-speed Film. „ Ultra 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 Roil Film and Pack. Herzog, Ortho-Isodux Roll Film. ,, ,, ,, Film Pack. Ilporo, Golden Iso-Zenith. Ilford 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. Sk)ft. Kodak, Verichrorne Film. Marion, Record. ,, Iso Record. Selo, Selochrome Roll Film and Film Pack. ,, Selo Pan. Roll Film. Wellington, Anti-Screen. ,, X Press. Extra Rapid. .•\gfa, Chromo. „ „ Isolar. „ Extra Rapid. ,, Isolar. ,, Iso Rapid. ,, ,, I. Chromo. „ Roll Film. Bar.net, S.R. Pan. ,, Studio Ortho. Criterion, Iso E.R. ,, Portrait. „ Roll Film. ,, Special E.R. Ensign, Roll Film. Gevaert, Filtered Ortho. ,, Chromosa. „ S.R. Gevaert, 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. Imperial, Non-Filter (new series). ,, Eclipse Pan. B. ,, S.S. Ortho. Kodak, Roll Film and Film Pack. Pathe, Roll Film. S^o, 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. „ S.R. Ortho. Kodak, Cut Film. Lumiere, Extra Rapide. „ Instantanee. ,, Pelliculaire. Medium. Ilford, Empress. ,, Chromatic. Ordinary. Barnet, Ordinary. Criterion, Ordinary. ,, Ordinary Iso. Gevaert, Ordinary. Ilford, Ordinary. Rapid Process Pan. Imperial, Ordinary. „ Pan. Process. 8 412