I am preparing a powerpoint with a bunch of aerial photos. The projector is a few years old. We have done a bunch of work in photoshop to improve the quality of the images. When these full size images (30"x36") are inserted into the powerpoint slide (30"x42") they appear very pixelated. Is there anyway to change this on the powerpoint end? I don't think there is anything else we can do on the photoshop end.