Leica 127, Инструкция по эксплуатации

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DISTANCE METERING
Due to its large effective metering basis, the range finder on the
Leica M-A is very precise. The benefits of this are particularly
noticeable when using wide-angle lenses with their relatively high
depth of field.
The range finder metering field is visible as a bright, sharply
defined rectangle in the center of the viewfinder. If you keep the
large viewfinder window closed, only the activated bright-line frame
and this metering field remain visible.
The focus can be set using either the superimposed image or split
image method:
SUPERIMPOSED IMAGE METHOD (DOUBLE IMAGE)
In a portrait, for example, aim the metering field at the eye and turn
the distance setting dial on the lens until the contours in the
metering field are brought into line. Then choose the subject detail.
Out of focus In focus
SPLIT IMAGE METHOD
When taking photographs of architecture, for example, aim the
range finder metering field at the vertical edge or another clearly
defined vertical line and turn the distance setting ring on the lens
until the contours of the edge or line can be seen at the limits of
the metering field with no misalignment. Then choose the subject
detail.
In practice, there is often no clear distinction between the two
methods. The two criteria can be used to great effect in
combination.
Out of focus In focus
EXPOSURE CONTROL
On the Leica M-A the exposure is set manually by selecting the
shutter speed and lens aperture combination specified by an
external exposure meter or based on your own assessment.
For further details of using and adjusting exposure meters, refer to
the manual for the device you are using.