How many megapixels do I need to output poster sized prints?
Many people are talking in put here..Not out put. For input you want the largest file size possible of course.However, One can get perfectly good results with 10-20 Megapixles. Now for output, Never use Jpeg. It is an compression format and you will lose quality between your final out put a press. Generally speaking you will use the Tiff format. You need to find out what their output is and match the size to that. If you do not have that at this stage just keep it at the original size. Sizing pictures up or down is considered a destructive process. This is why it is best to size the picture from the original source for each project. In another words one would not to rez a picture up for one project then take that larger picture and rez it back down for the second project. Now here is a trick so one does not have to mess file sizes all the time. Say you are doing your own prints and are doing a test print at 5×7. Go to image resize>Click off the resample button. The resize the image. No
