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If On is selected, photographs taken at shutter
speeds slower than 1 s will be processed to
reduce noise (bright spots, randomly-spaced
bright pixels, or fog).
The time required for
processing roughly doubles; the message
shown at right will be displayed when
processing starts and pictures can not be taken until processing is
complete (if the camera is turned off before processing is
complete, the picture will be saved but noise reduction will not be
performed).
In continuous release mode, frame rates will slow and
while photographs are being processed, the capacity of the
memory buffer will drop. Long exposure noise reduction is not
available during movie recording.
Photographs taken at high ISO sensitivities can be processed to
reduce “noise.”
Long Exposure NR
G button ➜ Cshooting menu
High ISO NR
G button ➜ Cshooting menu
Option Description
High Reduce noise (randomly-spaced bright pixels, lines, or fog),
particularly in photographs taken at high ISO sensitivities.
Choose the amount of noise reduction performed from High,
Normal, and Low.
Normal
Low
Off
Noise reduction is only performed at ISO sensitivities of ISO
1600 and higher.
The amount of noise reduction is less than
the amount performed when Low is selected for High ISO NR.