The mirror-type view-finder diogrom is shown in Fig. 1.
It operotes together with comero lens I ond consists of
swivel mirror 2, plone-convex lens 3, the plone surfoce of
which is frosted, pento-prism I ond triple-lens eyepiece 5.
With the mirror in its upper position 21 the comero gives
on inverted imoge on film plone 6. With the mirror down,
the imoge is received on the frosted plone of lens 3. The
imoge shorpness on the frosted lens 3 plone is just the
some os on the film plone. The inverted imoge of the subject
given by the comero lens is ogoin inverted by mirror 2 ond
prism 4, ond comes to the eye through eyepiece 5, os o
stroight imoge.
To wind the shutter turn the shutter winding knob I
(Fig. 2) os for os it will go in the direction indicoted by
the orrow engroved on the top cover. At the some time,
this will move the film, lower the view-finder mirror, wind
the shutter ond bring into oction the snop-shot counter,
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I
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t - comero lens;2 - swivelmirror;3 -
plone-convex lens with frosted plone surfoce;
,f - pento-prism;
5 - triple-lenseyepiece; 6 -
film plone
z'.
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