The advance of photography : its history and modern applications (1911)

Record Details:

Title:
The advance of photography : its history and modern applications
Date:
1911
Publisher:
London : K. Paul, Trench, Trübner & Co., Ltd.
Volume:
The advance of photography : its history and modern applications
Leaf #:
000180
Language:
English
Subjects:
Motion Pictures, Motion pictures--Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
May 02, 2024
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146 THE ADVANCE OF PHOTOGRAPHY ground glass, right up to, and immediately after, the exposure. The Naturalist Camera. — A camera has been devised to enable a telephoto lens to be used for relatively short exposures. This is known as the Naturalist's Camera, because it is very useful for obtaining photographs of insects, etc., which would be disturbed if one attempted to obtain a photograph at too close quarters. Under favourable circumstances the exposure required for the type of instrument shown in the next illustration may be as short as Tiosecond, so that lg' absolutely sharp pictures can be obtained in most cases. In fig. 62 the projection at the top is the viewing apparatus. In one form of this camera the image is projected by the lens upon an inclined mirror, and thence it is deflected at an angle of 45° into the special eye-piece. The field lens of this eye-piece has one surface ground. This consequently serves as a focussing screen and gives a fixed plane, accurately registering with the surface of the plate. The image is viewed through the eye lens, and Fig. 61.