I often work with CMYK images. Should I apply FocalBlade in CMYK mode?
It is generally better to do as much image processing as possible in RGB rather than in CMYK mode. CMYK was developed for printing purposes and is highly dependent on the print profile, whereas RGB is more independent and offers advantages for image editing. FocalBlade and other image processing tools often achieve higher quality results on RGB than on CMYK images. Additionally FocalBlade misses two features in CMYK. So better keep your image in RGB as long as possible and only switch to CMYK at the end of your workflow. If it is not possible otherwise, you can also apply FocalBlade in CMYK mode.