Well, sort of. I saw this post on Photojojo the other day that references a pretty easy to read useful chart by Design 215. However, Design 215 uses a inkjet as their primary printer. Inkjet machines have a much lower tolerance for file degradation than the LightJet. The internal rip in our machine’s software does such an amazing job that we have printed files as low as 100 ppi (and lower) with success. Their Megapixels vs Maximum Print Size Chart only goes to 150 ppi, but it gives you a good idea of what is possible for your file. It is a great quick reference if in doubt.