1. Color level (shortcut key ctrl+l)
1. Input color gradation-the original color gradation range of digital image, through adjustment to change the black and white gray
output color gradation-refers to the minimum dark color gradation and maximum highlight color gradation specified for the printer, the adjustment is the overall Shading
2. You can adjust the intensity level of the image's shadows, midtones and highlights, and correct the tonal range and color balance
2. Curve (shortcut key ctrl+m)
It integrates the functions of multiple commands such as "color level" and "brightness/contrast". 14 control points can be added to the curve. Moving these control points can make very precise adjustments to the color and tone.
a Press shift and click to select and control multiple control points.
b Click the delete button to delete the control points
Three, photo filters
Can be used to correct the color of the photo
Four, channel mixer
Change the color of the channel separately, not commonly used