Reply to thread

Message: <blockquote data-quote="Fast Learner" data-source="post: 471704" data-attributes="member: 649">Oh, and one more big issue for PoD and PDFs in general: File size vs. resolution/compression.In order to produce the details in a particular line screen (lpi) you need to have roughly twice as many dots (dpi) in the original (minimum of 150% of the lpi). For that 133 lpi print you need a 266 dpi image.In order to get a PDF down to a reasonable size, though, Acrobat suggests you throw away a lot of those pixels. It also suggest you convert pics to JPEGs to reduce file size, but JPEG compression really messes up the pictures. In order to get PDFs down to the 1-4mb size most people are willing to download, you end up with a poor-quality print. In order to get a decent PoD product you'd need to have ~20mb files, sometimes much larger (depending on the number of pictures and colors).Obviously this could be solved with multiple files (one for downloading, one for PoD), but it adds a whole layer on top of the question.</blockquote>