06-05-2017, 12:29 AM
The "By color" selection tool ( 
) allow various selection criteria, besides the standard "composite": R, G and B values, Hue, Saturation, Value...
Otherwise:
But this is rarely necessary, if you think you need this, you are probably making it more complicated than it is.
) allow various selection criteria, besides the standard "composite": R, G and B values, Hue, Saturation, Value...Otherwise:
- Open the Channels list
- Drag one of the R,G, or B channels to the main list to copy it
- Use the threshold tool to keep only the range values your want
- Right-click the channel and Channel to "selection"
- For a complete RGB coverage repeat with other two channels and use "Intersect with selection"
But this is rarely necessary, if you think you need this, you are probably making it more complicated than it is.