One of the less successful colour separations/trichromies. Amazing though that the duck stayed in one place during the session (of taking three shots and swapping filters in between).
Hoya's red (25A) green (X1) and blue (80B) filters intended for black and white photography & for using daylight film under tungsten lighting. The filter factors of 6x/3 stops (red) versus 4x/2 stops ( green and blue) means though that the red channel is a bit too strong and has to be taken into account when assembling a composite.
Scoo has replied to UlrichSign-in to post a comment.