Leica M Instruction Manual page 114

1. Bright line frame for 50mm and 75mm (example)
2. Metering field for distance setting
3. LEDs (Light Emitting Diodes) for:
a. Four-digit digital display with dots above and below
Digital display:
– Display of the automatically determined shutter speed for
aperture priority A, or for counting down shutter speeds
slower than 1s
– Warning that the metering or setting ranges are overshot
or undershot using aperture priority A
– Displays the exposure compensation value (briefly during
adjustment)
– Indicates that the back-up memory is (temporarily) full
– Indicates that no memory card is loaded (Sd)
– Indicates that the memory card is full (Full)
b. Dot above:
– Indication (when lit) that saved metering values are being
used
c. Dot below:
– Indicates (flashing) that exposure compensation is being
used
d. Two triangular and one circular LED:
– For manual exposure setting: Jointly used as light balance
for exposure compensation The triangular LEDs give the
direction of rotation of the aperture setting ring and
shutter speed setting dial to adjust the exposure.
– Warning of values below the metering range
e. Flash symbol:
– Flash ready to use
– Details of flash exposure before and after the picture
With automatic brightness control adjusted to the ambient brightness. This
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automatic control is not available for Leica M lenses with viewfinder attachments,
since they cover the brightness sensor 1.5 which supplies the information required
for their operation. In such cases the frame and displays always maintain a constant
brightness.
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