Long Exposure Noise Reduction - Canon EOS R5 Mark II Advanced User's Manual

Long Exposure Noise Reduction

Noise such as dots of light or banding that tends to occur in long exposures at shutter
speeds of one sec. or slower can be reduced.
1.
Select [
2.
Set a reduction option.
Caution
With [Auto] or [Enable] set, noise reduction after you shoot may take as long as
exposure for the shot.
Images may look grainier with the [Enable] setting than with the [Disable] or [Auto]
setting.
[BUSY] is displayed as noise is reduced, and the shooting screen is not displayed
until processing is finished, when you can shoot again.
: Long exp. noise reduction] (
Auto
For images exposed for 1 sec. or longer, noise reduction is performed
automatically if noise typical of long exposures is detected. This setting
is effective enough in most cases.
Enable
Noise reduction is performed for all images exposed for 1 sec. or
longer. The [Enable] setting may reduce noise that cannot be detected
with the [Auto] setting.
).
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