Automatic Optimization; Noise Reduction; Noise Reduction Function For Long-Term Exposure - Leica M11 Instruction Manual

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PHOTO SETTINGS ▸ AUTOMATIC OPTIMIZATION

AUTOMATIC OPTIMIZATION

NOISE REDUCTION

NOISE REDUCTION FUNCTION FOR LONG-TERM EXPOSURE

In digital photography, the appearance of flawed pixels that can be
white, red, blue or green is referred to as "noise". Image noise be-
comes more apparent when using higher sensitivities, particularly on
uniform dark areas. Long exposure times may cause severe image
noise. In order to reduce this annoying phenomenon, the camera
will take a second "black picture" (taken with the shutter closed)
automatically after a shooting with slow shutter speed and high
ISO value. The noise metered in this parallel image is then digitally
"subtracted" from the data for the actual image. In such cases the
message
Noise reduction in progress...
time value. The doubling of the "exposure" time must be taken into
account for long-term exposure times. The camera must not be
switched off during that time.
Factory setting:
On
▸ Select in the main menu
Noise Reduction
▸ Select /
On Off
will appear with a relevant