Hi, I was wondering if you could help me understand this concept: I'm trying to design illustrations for this print-on-demand t-shirt website. They encourage users to post images which are 7632 x 6480 in size. Yet, they say that DPI and PPI have no effects on the final upload. How is that possible? I was under the impression that for an image to be of high quality for print, the PPI should be fairly high and in the 300 region. What exactly am I missing to understand here? The other thing is that: When I create a new document which is 7632 x 6480 and add an illustration to it, when I save it, depending on the PPI used the actual resolution changes in the saved file. As an example: I started a new document 7632 x 6480 and created a circle on it. I then saved it as a PNG file with a PPI of 150 (tried to save it at 300, but Illustrator doesn't even allow me to save at 300 - I get an error). When I checked the file's properties panel, under "details" it was listed that the file has a resolution of 14170 pixels by 12550 pixels. I tried adding a few more shapes to the document and sure enough the final resolution went on higher still. So...does this mean that I can never know how big of a resolution the final PNG file that I save will have even though I start knowing very well how big I want my art-board to be? Thank you in advance. ... View more