Purpose and Advantages, Specifications

ZENIT-TTL	User manual, 1965 year

Zenit TTL

This text is identical to the one in the User manual, English version, 1965 year.

1. Purpose and Advantages

ZENIT-TTL camera is intended for taking amateur pictures on black-and-white color films.

The camera is provided with a semi-automatic exposure meter operating through the lens (TTL) a self-timer and is synchronized for flash lamp operation. It accepts interchangeable lenses provided, with mounting thread of M42x1 and back focal distance of 45.5 mm.

ZENIT-TTL can be used for special kinds of photography such as reproduction works with the help of extension tubes, taking close-up pictures of small subjects at close distance (macrophotography), taking pictures with the help of a microscope (microphotography) and so on.

ZENIT-TTL camera has the following advantages:

•semi-automatic TTL exposure meter provides for correct exposure setting when taking pictures with the standard lens as well as with interchangeable lenses and extension tubes;

•instant return mirror ensures continuous viewing of a subject before and after exposure;

•high speed lens is provided with a pre-set diaphragm mechanism which automatically closes the diaphragm at the moment of the shutter operation (“A” mode); manual operation of the diaphragm is provided as well (“M” mode);

•fully open diaphragm ensures maximum brightness of the image seen in the viewfinder; this fact is very important at the moment of viewing and focusing;

•focusing can be done both by a microraster or a ground glass;

•speedy exposure setting, the system of simplified film loading, rewinding of exposed film with the shutter disengaging bush in locked position — all these features cut down the time necessary for preparing the camera for operation.

2.Specifications

Frame size — 24x36 mm

Film used — 35 mm, perforated Length of film in cassette — 1,65 m Number of frames — 36

Shutter speeds — from 1/30 to 1/500 s, “B” (by hand) and long exposure time Standard lens — HELIOS-44M:

focal length — 58 mm maximum relative aperture — f/2 diaphragm scale — from 2 to 16 distance scale — from 0,55 to “∞”

Exposure meter supply — from one battery of Mallory “PX-13” type Film speed range — from 16 to 500 GOST units

Lens mounting thread — M42x1 Light filter thread — M52x0,75 Tripod socket thread — 1/4ʺ

Viewfinder linear field of view — 20x28 mm Overall dimentions without case — 138x100x93 mm Mass — 1,01 kg

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