Ihagee EXA IIa, Руководство пользователя

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reflecting surface (with glass, at approximately
35”).The filter must be rotated in front of the
lens until a position is found in which the re-
flection is eliminated; its effect can be observed
in the reflex image. (The exposure must be
increased by 2-3 times.)
Special-purpose lenses
Fully-comprehensive photography is scarcely
possible without special types of lenses, but
only the single-lens reflex camera makes it
possible to exploit fully all their potentialities
in such a simple manner. The reflex viewfinder
image of the EXA IIa always shows the exact
area covered by the lens as weIIas the image
definition and depth of field.
Wide-angle lenses (with a short focal length)
embrace a wide angle of view, allowing you to
get plenty into your picture although every-
thing appears relatively small (Fig. 32). They
are invaluable for indoor pictures, architectural
work, broad landscape scenes, copying pictures
in art galleries, etc.
Long-focus lenses include both those of normal
Fig. 33