In photoshop, I need to run a batch. I have a load of pictures of different hights & widths that I need to paste onto a box of a certain pixel dimention - say 400x600. When I do a cut or copy, is there a way I can paste onto my box withing the constraints of the box edges, or set it to paste within 3-4mm of the closest edge, say...? Obviously if its a taller box than wide, and the image is the opposite, I'll end up with plenty of blank space at top & bottom, but that's fine... ???