Leica M Instruction Manual page 231

MONITOR
The monitor is manufactured using a high-precision process. This
ensures that of the total of more than 921,600 pixels only a very
small number will not work correctly, i.e. remain dark or always be lit.
However, this is not a malfunction and it does not impair the
reproduction of the picture.
• If the Leica M is exposed to significant temperature fluctuations,
condensation can form on the monitor. Wipe it carefully with a soft
dry cloth.
• If the Leica M is very cold when it is turned on, the displays may at
first appear darker than usual. As soon as it warms up, it will reach
its normal level of brightness.
SENSOR
• Cosmic radiation (e.g. on flights) can cause pixel defects.
CONDENSATION MOISTURE
• If condensation has formed on or in the Leica M, you should turn it
off and leave it to stand at room temperature for
around an hour. Once the camera temperature has adjusted to
room temperature, the condensation will disappear by itself.
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