Whats the best way to provide photography?
Ideally, you want to crop and size the photograph before you send it out for scanning. In this way, the file size is kept as efficiently small as possible, and there is less chance for error or misinterpretation. When you spec the scan, make sure you understand how you are going to use the photograph, and what kind of stock and printing you plan. A rule of thumb is to scan at about twice the DPI you plan to use as a line screen, for example, printing at a 150 line screen, you would scan at 300 DPI. However, this is assuming the image is cropped and scanned! If you scan a full-length portrait at 300 DPI, and then decide to crop down to head and shoulders, you only have enough information in your scan for about a 45 line screen–coarse and grainy reproduction, at best.