May I ask if it is possible to add a spot color channel to cmyk's tif file

[291598912]

May I ask if it is possible to add a spot color channel to cmyk's tif file

[radarhere]

Spot color channels have been mentioned before, and the conclusion was that they aren't supported.

#3110 (comment)

You're essentially talking about spot colors at that point... there's no support for more than 4 usable channels in pillow.

#1888 is an open issue partly about supporting more channels.