Leica R7 User Manual page 33

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Example A: normal program
A lens with f/2.8 as the largest aperture is used;
the shutter speed dial is set at "30" (next to the
symbol "P"). In poor light, the camera always
works with full aperture and shutter speeds
between 16 s and 1/30 s. If the Ev value
increases (more available light), the aperture is
stopped down and the shutter speed is increased
continuously, until the combination f/22 and
1/2000 s is reached (line A). If, for instance, the
Ev reads 14, the program mode produces
exposure at 1/250 s at f-stop 8. This universal
program is suitable
photographed with 35mm to 90mm lenses under
normal lighting conditions.
for most subjects
Example B: program for depth of field
If a smaller shutter speed is given, e.g. by setting
"2" = 1/2 s the automatic program functions as
shown by line B. This is the method of choice for
better depth of field and is ideally suited to
shorter focal lengths, stationary subjects and
good lighting conditions.
Taking the same Ev value of 14, the automatic
program now computes 1/60 s at f-stop 16.
Example C: program for action shots:
If the shutter speed is set to a shorter exposure
time (higher shutter speed) - e.g. "500" = 1/500 s,
line C applies. This program "prefers" higher
shutter speeds (shorter times), ideal for freezing
moving subjects or when using longer focal
lengths. Again taking an Ev of 14, the automatic
program now computes I/1000s at f-stop 4.
30