Canon EOS 80D - Manual (Page 172)

3 Setting Noise ReductionN
172
Noise reduction is possible with images exposed for 1 sec. or longer.
1
Select [Long exp. noise
reduction].
 Under the [z3] tab, select [Long
exp. noise reduction], then press
<0>.
2
Set the desired setting.
 Select the desired setting, then press
<0>.
 Auto
For exposures of 1 sec. or longer, noise reduction is performed
automatically if noise typical of long exposures is detected. This
[Auto] setting is effective in most cases.
 Enable
Noise reduction is performed for all exposures of 1 sec. or longer.
The [Enable] setting may reduce noise that cannot be detected with
the [Auto] setting.
3
Take the picture.
 The image will be recorded with noise
reduction applied.
Long Exposure Noise Reduction