Print resolution
All print work (such as photo inkjet, laser, newspapers, magazines, photo books, and four-color lithographic printing) has to be set to a resolution of 300dpi as a best practice, so the files that are used are going to be far larger than those for web display. It's called the standard print resolution because it produces a seamless continuous tone image with no visible pixelation or color banding.
That being said, thanks to some fantastic resampling software, inkjet printers and most commercial four-color CMYK print devices can produce awesome results using lower-than-recommended resolution files. If you're not sure, check with your local business before you start outputting for print:
All terrestrial-based book-making software only function with JPEG or PNG files. If they are RAW, TIFF or PSD files, output and convert them using the Export as New Files feature to a folder on the desktop. Then they can be imported into the book software.
Here's an example of...
