michaelordway

The viewing distance is usually the diagonal. That's a good measure to keep in mind. Thanks for all the advice. I'm going to try printing at that size using the existing file as a test first. If it's good then I'll use that.

You are absolutely right. I did a search in the main search window on the site's homepage, not on the forum search! Thanks for the answer though!

I recently printed a 48" x 24" image for a client at 150ppi. The size of the image was 7200x3600. The quality was beautiful, no problems. He's now requested it to be blown up even larger. He wants a 16 foot by 8 foot image (4.8m x 2.4m). I don't think re-rendering at 28800x14400 is the best way of doing this. What sizes and what ppi can I get away with while still preserving image quality? The image is going to go in a store window, so it has to remain fairly high quality from a few feet away. Michael