12-12-2023, 11:10 PM
- Can you post the picture with the mask "before" you piush it?
- There are globally three ways to represent channels in Gimp:
- As a value in the [0.0 ... 1.0] interval (Pixel in the Pointer and Sample points dialogs). This is mathematically how thing work under the hood in 2.10)
- As a percent [0% ... 100%] (RGB(%) in said dialogs), so 100% is the same as 1.0 in Pixel.
- As a 8-bit channel value in the [0 ... 255] range (RGB(0..255) in said dialogs) so 255 in the same as 100% in RGB(%) or 1.0 in Pixel.
- As a value in the [0.0 ... 1.0] interval (Pixel in the Pointer and Sample points dialogs). This is mathematically how thing work under the hood in 2.10)
- So your opacity is likely expressed in percent...
To add to the fun the Pixel value is a linear scale, while the RGB values are "perceptual", so a "middle" gray (gray that has the same overall luminosity as a dense checkerboard) is .50 in Pixel, but 73% (RGB(%)) and 186(RGB(0..255))