Home Movies (Jan-Dec 1940)

HOME MOVIES FOR JUNE PAGE 297 any kind of telephoto lens. The two telescoping tubes must be an accurate fit but should telescope smoothly. They can be made of aluminum, brass or other metal. Square tubes of heavy plywood are also practical and much easier to line up, etc. The entire inside of the telephoto is painted flat black. The open end of the large tube should be longer than seems necessary, at least 3" or 4" past the camera opening. This prevents stray light from fogging the film. As shown in the sketches, either metal clamps or a tripod base arrangement holds the telephoto in a rigid position which must always be the same each time it is used. Black felt placed around the section that fits the camera opening will protect both the camera and the film. If only distant telephotography is contemplated, the telephoto can be simplified by making it fixed focus. Movies of the moon taken at the proper phase show the lunar mountains and craters clearly. Solar and lunar eclipses can also be photographed. Next month we will describe the “Foucault” test, a method of testing concave surfaces accurately to about five one -millionths of an inch with a simple homemade testing outfit. This will show which spectacle lens is best photographically. We also will describe in condensed form how an amateur can grind and polish by hand an accurate parabolic telephoto mirror of any desired size and speed at very low cost. This reflecting telephoto principle can also be applied to 35mm candid cameras, provided they have a focal plane shutter and interchangeable lens mount. l/l/jultt-plane • Continued from Page 281 and 3 will show the suggested type of guide. The first position will be used in composing the title by sighting through the rangefinder. The second position is used in taking the picture, since the camera lens is in the exact position from which the picture was composed. Next, examine the draw ing of the two-way switch. This switch is installed in the table top in a position such that movement of the camera mount from the first to the second position moves the lever arm No. 2 from contact with arm No. 3 to contact with arm No. 1. When the camera is in the composing position, the floodlights are extinguished Exposure Meter Guide CORRECTED MARCH 1, 1940 Weston Weston ScHEINER or GE SCHEINER or GE CS c3 aS -a cS S Day a s Day a s Day oi 3 Day cS s GEVAERT 29 27 100 64 Super Reversal 23 21 24 16 24 23 32 24 Panchro 20 18 12 8 21 20 16 12 Ortho 21 17 16 6 27 25 64 40 23 21 24 16 GENERA 12 8 3 Meteorpan 23 21 24 16 20 12 3 Normal Panchromatic.. 20 18 12 8 23 21 24 20 Super Ortho. 21 17 16 6 18 16 8 5 Movetone Ortho 19 13 10 3 Semi-Ortho 18 12 8 2 21 19 16 10 KIN 0 LUX 18 12 g No. 1 16 6 21 2D No. 2 . . 18 16 12 12 2 1-6 No. 3 26 24 50 40 PELLEX 100 64 Super 26 25 50 40 94 23 32 24 20 18 12 8 90 18 12 8 18 14 8 3 93 21 24 16 25 24 40 32 23 21 24 16 Ortho 8mm 17 12 6 2 16 10 5 3 23 21 24 16 HOLLYWOOD 16 8 5 26 25 50 40 18 14* 8 3* Pan 21 20 16 12 . 18' 21 8* 12 Semi-Ortho 18 12 8 2 AGFA 16mm SSS Pan 16mm Hypan 16mm Panchromatic 16mm Supreme Pan. Neg. 16mm Finopan Neg 16mm Positive 1 6mm Plenachrome 8mm Twin-8 Hypan. . . 8mm Filmopan DUPONT Reversal Pan Regular Pan Neg. . Superior Pan Neg.. Positive EASTMAN 16mm Super XX Pan. . . 16mm Super X Pan 16mm Safety 16mm Sound Pan 16mm Pan. Negative. . . 16mm Positive 8mm Super X Pan 8mm Regular Pan Kodachrome (8 & 16mm) Koda. “A” (8 & 16mm) . •With filter ■SESl Now Forever Yours I "NEW YORK WORLD’S FAIR OF 1940" In Home Movies exclusively produced by the Official Motion Picture Photographers of the New York World's Fair. 16 mm. 8 mm. IjOW you can reserve a front-row seat for the mightiest specJ| tacle ever conceived— mankind's Parade of Progress— the N.Y. World's Fair of 1940! Now you can thrill to the splendor of the World of Tomorrow as seen by day and by night. Now you can sit in your own easy chair and let Official ace cameramen take you on a tour of the colorful International Pavilions, the fascinating educational Exhibits, the gay, mad Amusement Area— everything that goes to make this World's Fair the most amazing and complete record of our Civilization! A film you'll enjoy now and treasure for years to come. Made in Five Standard Sizes 16 mm. 8 mm. 360 Feet silent film . . . $10.00 180 Feet silent film . . . $6.00 100 Feet silent film ... $ 3.50 50 Feet silent film . . . $1.75 Sound On Film — 76 mm. Only. 350 feet . . . $17.50 Natural Color Film — 76 mm. Only 100 feet . . . $17.50 360 feet . . . $62.50 400 feet on sound . . . $100.00 MOMENTS WHEN THE WORLD GASPS! Official Films "NEWS THRILLS OF 1940"-Vol. 1 This year of 1940 is probably the most thrill-packed, chill-packed year in the world's history. So Official brings you all the important headlines from January to June — not in cold type — but in alive, moving pictures — and brings them right into your own living room! 16 mm. and 8 mm. in the same Released on or about five lengths and prices as above. June 29 Ask your dealer for these films! OFFICIAL FILMS 330 WEST 42nd STREET, NEW YORK, N. Y. In Canada: General Films kiUUJ ill r. ■ ■ li Xvt'f’AA A ' * "A io Z " jMu uwttfi jor MOVIE TITLE BACKGROUNDS 30 subjects in color. Reusable. Sticks to any surface. Complete assortment $1. At your dealer or send direct. JACOB STEIN ( Mfr.) , Dept. F3 175 Fifth Ave. New York, N.Y.