CompuServe Messages

Don, I thought you might understand this: When I create a targa image in Photoshop, I specify the 752×480 size. But when I bring that targa into the PAR, it appears to have the wrong aspect ratio. I tried it with a circle, and the circle clearly looks stretched vertically. If I change the image size in Photoshop to 752×400, the aspect ratio will then appear correct but the image will not fill the TV monitor screen. Any idea what I'm missing in all this? Thanks, Alec Jason