i've had this idea for quite a while, since I was thinking about special effects for a short film i was involved with, very low budget of course... My interest has turned now towards still photograph and I do most of my "arty" work on film. However I do extensively use a digital camera and photoshop. My question concerns masking a photo to exxtract the subject from the background. My idea is to take a photo of the background (tripod) then stick the person/thing in front of it with same exposure. Then armed with your two photos go into photoshopor something of the sort and subtract one from the other to leave the subject. presumably if the images are exactly, or as close to exact as possible minus the subject in one, thgere should be sufficient information to create a mask of the subject. This would allow for many cool things to be done very easily. I really can't afford a greenscreen. Thanks very much to anyone who knows the means to do this. :hail: Regards, Willy.