HOW CHEMISTRY CREATES A PHOTOGRAPH
What goes on in the emulsion that coats film is shown by simple test-tube experiments.
By TRACY DIERS
THE film in your camera is thinly coated with one of the most unstable chemicals known to man. Silver bromide is its name, and from the moment of its birth it is kept in a cradle of darkness until in your camera a swift shaft of light seeks it out. The intricate and far-reaching changes brought to silver bromide by that flash of light are in part still secrets of nature. Much of what happens in your camera and in the darkroom is known, however, and can be shown at home with a few chemicals in a test tube.
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PHOTO STAMP PRINTER
By Kenneth Murray
PRINTING up to 100 stamp-size photographs on a single sheet of 8×10 in. paper is easy with the MI Printer. After processing, each sheet can be gummed on the back, and cut so that individual stamps are available for attaching to personal stationery, books and other possessions.
Printing can be done from any negative; the mask opening is 7/8 x 7/8 in. This leaves a narrow white border on each stamp. Without changing the guides, you can substitute a mask with an opening twice as large and print 50 exposures on each sheet.
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No. 1A Pocket Kodak, Series II
The Lens:
Kodak Anastigmat f·7·7 lens is a sharp-shooter—it puts keen definition in the negative. Result, snappy prints—and enlargements when you want them.
The Shutter:
The Eastman-made Diomatic shutter has four snap-shot speeds up to 1/100 second as well as time and bulb actions, and these speeds are accurate. This precision, plus the presence of the automatic exposure dial which gives the proper timing at a glance, means correctly exposed negatives.
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This is obviously where Google stole the idea for the cameras on their street view cars.
Cameras Spin on Bicycle Wheel to Film Lightning Streak
Eight box cameras on a bicycle wheel are the “lightning chasers” built by Prof. John G. Albright of the Case School of Applied Science to trap lightning on film. Fast enough to photograph the component strokes of a lightning flash, its wheel is revolved four times a second while pictures are taken. In addition to the eight rotating cameras on the wheel there are three stationary cameras.
Cat’s are still fun to photograph. They’re even more fun with a caption though.
Cats Are Fun to Photograph
An expert reveals tricks that help you get good pictures of Tabby. Patience is the biggest requirement.
By Walter Chandoha
CATS are easy to photograph—if you can tap an unlimited supply of patience. Beyond that, all you need is a camera (I prefer a reflex) with flash attachment. An assistant, portrait lenses, a tripod and a flash extension are helpful, but by no means essential.
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Tricks That Enable You to Take Secret Pictures
TRICKS used by press photographers and detectives come in handy when it is desired to snap imposed photographs of friends or members of the family. For such pictures photographers usually use tiny, easily concealed cameras. Despite their size, these midget cameras are surprisingly fast and accurate, and their wide angle lenses make the use of a range finder unnecessary. One of the commoner ways of screening a camera from the intended subject is to cover it with a handkerchief until the trigger is released. Occasionally the camera is carried in a vest pocket with the lens shielded by the wearer’s coat.
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And it’s a compact camera at that!
SELF-LIGHTING CAMERA NOW USED IN MOVIES
A movie camera that produces its own light is a recent innovation in a Hollywood, Calif., studio. It carries a detachable lamp with a 500-watt tubular frosted bulb upon a bracket at the front. In this way a continuous light is thrown on the face of an actress while the camera is moved around her for a close-up.
Tiny Camera Is Built under Lens with Jewelers’ Tools
Requiring the use of jewelers’ tools and magnifying glasses in its construction, a miniature camera with parts that work, and less than an inch in length, has been made for the royal doll house of the queen of England. Three months’ continuous work by experts was necessary to complete the tiny instrument. All pieces were formed by hand and carefully checked with larger cameras to insure accurate shape.
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Tune in next week, when we’ll continue our oncological explorations on the Cancer Time Theater hour.
Strange Scenes from Life Caught with X-Ray Camera
X-ray photography, widely used in medicine and industry, is familiar to almost everyone in its ordinary applications. Recently a German physician has busied himself making X-rays of everyday scenes. Pictures on this page show the result of his hobby. Above, the hand of a sculptress modelling the clay figure of a llama. Note that the wire framework on which figure is built up is seen as white lines
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