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manuals
34
wheel back into its normal position to lock the
setting obtained.
In its normal position, the setting wheel turns
readily, but without altering the eyepiece setting.
When the wheel is pulled out, you feel distinct
click stops as you turn it.
If the standard eyepiece adjustment from +2 to -2
diopters is inadequate for your eyesight,
additional correction lenses are available (see
page 51).
Focusing with the universal screen
The LEICA R7 includes a universal focusing
screen as standard feature. This produces a
bright, high-contrast image and is suitable for
photography in most of the situations that are
normally encountered. When the image is out of
focus, the edges and lines of the subject are
discontinuous in the upper and lower semicircles
of the split-image focusing screen (i.e. the
smaller circle).
A ring formed by a screen of rectangular
microprisms surrounds the central split wedge.
When the image is out of focus, this screen
appears to flicker. The outer circumference of
this ring also marks the outline of the field
for selective exposure metering.