Automatically reduce noise
Use the machine learning-powered Denoise tool to quickly remove camera noise produced by digital cameras. Denoise can also reduce JPEG compression artifacts.
Do any of the following:
- Choose Format > Denoise from the Format menu at the top of your screen.
- Click Color Adjustments
in the Tools sidebar and choose Denoise from the More 
menu. - Press
Aon your keyboard, then click More at the very top of the Color Adjustments pane and choose Denoise. - Press
Control ⌃+Shift ⇧+Don your keyboard.