Scanning input Math Once the desired output size and resolution are known the scanner can now be set to the proper resolution for input. If scanning for full page printing within most graphics software most scanner interfaces provide an estimated raw file size of the selected area. For full page printing a raw file size of about 2MB from a selected area is about right when dealing with original photos or artwork. A file size closer to 8MB is desired when dealing with preprinted images. File Formats Digitized images can be saved in a multitude of file formats.
Many formats compress the image to make the file size smaller in some way.
An uncompressed 100dpi 8 x 10 image will take up 2MB of disk space. The same 8 x 10 image at 600dpi will take up 82MB of disk Space. Several graphics formats provide reasonable compression and are cross-platform compatible. Not every format will work with every program. Graphics compression can be lossless or lossy.