Sony ILCA-99M2 Manual page 145

the image quality.
Off:
Does not activate noise reduction. Select this to prioritize the timing of shooting.
Note
Noise reduction may not be activated even if [
situations:
The shooting mode is set to [Sweep Panorama].
[Drive Mode] is set to [Cont. Shooting] or [Cont. Bracket].
[ Long Exposure NR] cannot be set to [Off] in the following shooting modes:
[Intelligent Auto]
Depending on the shooting conditions, the camera may not perform noise reduction, even if the
shutter speed is 1 second(s) or longer.
[125] Shooting Noise reduction
High ISO NR (still image)
When shooting with high ISO sensitivity, the product reduces noise that becomes more
noticeable when the product sensitivity is high. A message may be displayed during noise
reduction processing; you cannot shoot another image until the message disappears.
MENU →
1
Menu item details
Normal:
Activates high ISO noise reduction normally.
Low:
Activates high ISO noise reduction moderately.
Off:
Does not activate high ISO noise reduction. Select this to prioritize the timing of shooting.
Note
[ High ISO NR] is not available in the following shooting modes:
[Intelligent Auto]
[Sweep Panorama]
When [ Quality] is set to [RAW], this function is not available.
[ High ISO NR] does not work for RAW images when the [
(Camera Settings1) → [
Long Exposure NR] is set to [On] in the following
High ISO NR] → desired setting.
Quality] is [RAW & JPEG].