hi there does anyone know off any good websites with either photos or diagrammes illustrating how to project onto a wall with an enlarger to blow up prints to poster size. i have been using this technique for a while but find it allmost impossible to fit an image perfectly within the alloted frame whilst maintaining a full neg black boarder, this is due to the amount of differant planes that you have to adjust both film and enlarger to acchieve a flat image on the wall. was hoping that some diagrammes might help me (or advice) otherwise ill have to loose the black boarder whitch i feel is essential to my images. any help usefull, cheers, caleb. p.s. how is this done for professional images in exhibitions?