i don't know if the title of the thread is quite right, but here is my current major headache:
i made some colour pictures for a project and unfortunatly had some broken off film in the filmback which left blacked out parts on the images. the images are very difficult to retouch manually because of their content, ancient sculptures.
however i made the same exposures with a different filmback in black and white which are perfect, i have tried pasting the missing back and white "patches" into each colour channel, and the result is (obviously) grey patches in the colour image:
is there any way to paste the black and white "patches" into the colour channels and have them automatically blending in some way with the density of each channel?
if that sounds desperate, it is!