High Iso Speed Noise Reduction - Canon EOS-1D X Mark III Advanced User's Manual

High ISO Speed Noise Reduction

You can reduce the image noise generated. This function is especially effective when
shooting at high ISO speeds. When shooting at low ISO speeds, the noise in the darker
parts of the image (shadow areas) can further be reduced.
1.
Select [
2.
Set the level.
: High ISO speed NR].
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