Yashica Twin Lens Reflex Guide - Focal Press January 1964 Page 10 / 55
Scans and Document copyright by Mischa Koning - www.3106.net
This document or parts thereof may not be sold and / or resold in either print form or
electronically without prior written consent from Mischa Koning
The Reflex Finder
The reflex finder is a viewing-cum-focusing device. It consists of a focusing screen on top of the camera and in most
models additionally a fresnel screen. This gives an extremely bright image right to the edges, and high colour brilliance.
The image entering the camera through the finder lens is reflected on to it by a mirror. This reflex image remains visible
even during and after the exposure.
Its purpose is first to show the exact picture area, and secondly to help in getting the picture sharp on the film.
Viewing
The picture on the screen appears upright but reversed left to right. Movements are also reversed left to right. To follow a
moving object the camera must be turned against the apparent movement.
With the frame finder built into the focusing hood you can also follow movement -it shows an upright and right-way-
round image.
When using the frame finder, do not attempt to turn the camera to the right or left away from the eye, nor try to move the
eye from the centre of the back sight. This "spying round the corner" is deceptive, as only that section will appear on the
negative which you see in the finder looking straight ahead with the eye close to and in the centre of the opening.
You will probably hold the camera reasonably level, but make sure that vertical lines of the picture run parallel with the
lines engraved on the screen or the sides of the screen itself. You can tilt the camera intentionally, but make sure that the
effect does not look like an accidental tilt.
Parallax Compensation
The reflex finder of the Yashica reflex is masked so that the field seen in it right down to 3½ ft. will appear on the
negative.
The frame finder yields a view of its own as it views from a point away from the lens. The greater the distance between
the two, the bigger the difference of this point of view, i.e. the parallax. Parallax hardly counts when viewing and taking a
subject at distances down to 6 ft., as the difference of viewpoint is negligible as compared with the distance between
camera and subject.
But if we photograph anything at close quarters-take a portrait for example-the parallax may show. The image as seen
through the frame finder may include all of, say, a hat worn by the subject of your portrait, while quite a portion of it may
be cut off in the picture taken. So do not use the frame finder at close quarters. If you must use it, make allowances by
including in the frame finder view a strip at the top of the frame that you can do without in the picture. And the closer You
are to tile Subject, the wider that strip must be.
To Next Page
Loading...
Need help?
General
