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Technical data
Camera type: 35 mm rangefinder camera for the 24 x 36 mm
format; mechanical shutter and selective through-the-lens
exposure metering of the ambient light, or centre-weighted
integral metering of the flash light with compatible flash units
Lens mount: LEICA M bayonet
Lenses: 14 LEICA M lenses with focal lengths from 21 to
135 mm
Bright-line viewfinder: The subject is not viewed through
the camera lens
Viewfinder magnification: 0.72 x (or 0.85 x) for all lenses
Viewfinder eyepiece: Adjusted for -0.5 dioptres, provision
for screw-in correction lenses
Viewfinder display: Six (five in the 0.85x viewfinder) bright-
line frames for the various focal lengths; rangefinding field; 3
LEDs for shutter/aperture balance, 1 LED for flash operation
Framing: By projection of pairs of bright-line frames into
viewfinder: 28 and 90 mm (single 90 mm frame in the 0.85 x
viewfinder), or 35 and 135 mm, or 50 and 75 mm; automatic
selection of correct frame for lens in use
Frame preselector: A three-position lever adjacent to the
lens bayonet permits projection of two pairs of bright-line fra-
mes (single 90 mm frame in 0.85 viewfinder) without the lens
needing to be changed
Parallax compensation: Automatic compensation of hori-
zontal and vertical viewfinder/lens parallax, coupled to focu-
sing drive; the bright-line viewfinder frame automatically fra-
mes the subject to match the image in the lens
Identical image in viewfinder and on film: The bright-line
frame corresponds to a framed 35 x 23 mm close-up slide for
each focal length. At infinity, the film frame covers slightly
more than the bright-line frame.
Wide-base rangefinder: Bright-field split-image and double-
image rangefinder in centre of viewfinder image.
Effective base line: 49.9 mm (in the 0.72x viewfinder;
mechanical base line 69.25 mm x 0.72 x viewfinder magnifi-
cation), or 58.9 mm (in 0.85x viewfinder; mechanical base
line 69.25 mm x 0.85x viewfinder magnification)
Partly silvered viewfinder window: To improve visibility of
the LEDs against a bright subject background, the lower and
upper edge of the viewfinder window is silvered.
Exposure metering method: Selective through-the-lens
metering at working aperture; centre-weighted integral TTL
metering of the flash light at working aperture when compa-
tible flash units are used.
Exposure metering principle: Measurement of light reflec-
ted by 12 mm diameter white circular dot in centre of first
shutter curtain; area approx. 13% of negative size.
Orientation of exposure metering field in the viewfinder:
Field diameter about 2/3 length of shorter side of viewfinder
frame.
Photocell: Silicon photodiode behind condenser lens top left
(for ambient light) and bottom right behind bayonet fitting of
camera.
Spectral range: Modified by filters in front of photocell to
match typical spectral range of human eye.
Sensitivity of exposure range: 0.03 cd/m2 to 125 000
cd/m
2
at f/1
Low-light warning: By means of flashing triangular LED on
the left in the viewfinder.
Working range: At ISO 100/21°, exposure values from -2 to
20 EV, i.e. 4 s at f/1 ("B" setting) to 1/1000 s at f/32.
Switching on the exposure meter: By light pressure on
shutter release when shutter is cocked. Following the expo-
sure, or with the shutter speed set to "B" or "OFF", the expo-
sure meter is switched off after approx. 12 s.
Exposure meter display: By light balance in the viewfinder
with three red LEDs; the two triangular LEDs indicate the
direction of rotation of aperture ring and shutter speed dial
required for the shutter/aperture balance; in the event of
under- or overexposure of at least 1 EV, one of the two trian-
gular LEDs flashes; in the event of under- or overexposure of
up to approx. 1/2 EV, one of the two triangular LEDs as wells
as the round LED in the centre flash; when shutter and aper-
ture match the exposure meter, i.e. when selected exposure
is correct, only the round LED in the centre comes on.
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