I have 3 separate images already in RGB format in their respective colors (in TIF format). How can I merge the three of them together?
I have looked through past posts, and don't know/understand if I need to make the images grayscale first and then convert back to a red, blue, or green channel. If that is the case I can't figure out how to find the "channels" editing window that always shows up in all of the youtube tutorials.
I have also tried running a "merge channels" script, but it just gives me an error message "Error 8800: General Photoshop Error Occurred. This functionality may not be available in this version of Photoshop" - Although how I ran this script is by opening it, so that may be the issue.