Exposure Metering; Turning On The Exposure Meter - Leica MP Bedienungsanleitung
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Exposure metering
On the LEICA MP, exposure metering for the avail-
able ambient light is done selectively through the
lens with the working aperture. The light reflected
by a bright metering spot is captured by a photo-
diode (arrow) and measured. This silicon photo
diode with a convex lens in front of it is positioned
on the left above the shutter. The metering spot
(12 mm diameter, corresponding to approx. 13% of
negative format) is situated in the center of the
first shutter curtain.
The uneven coverage of the white paint is not the
result of faults in production. Rather, it is due to
the fact that it is not possible to apply a sealed,
thick coat of paint to the flexible rubber blanket of
the shutter without impairing the shutter function.
The uneven structure of the metering spot in no
way impairs the exposure result.
The appropriate shutter speed/aperture combi-
nations for correct exposure are determined using
a light balance consisting of three red LEDs
Q
(
) in the viewfinder display. When the
setting is correct, only the central circular LED
lights up.
Turning on the exposure meter
The exposure meter is turned on by lightly press-
ing the shutter release button (17) to the pressure
point, provided that the camera is turned on, i.e.
the shutter speed setting dial (16) is at a position
other than B/OFF, and the shutter is fully
cocked.
If the exposure meter is ready to use, one of the
two triangular LEDs lights up and stays lit, in some
cases along with the central circular LED.
If the shutter release button is let go, without
releasing the shutter, the exposure meter remains
turned on for around 14s more, and the LED(s)
remain lit for the same time.
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