Resolution
Image files should be sized and cropped to their final print dimensions at a resolution appropriate to the print size
Print Size
Resolution
Approx. File Size
up to 11x14
300dpi
40MB
up to 16x20
275dpi
70MB
up to 24x30
225dpi
104MB
up to 30x40
200dpi
137MB
over 30x40
150dpi
over 77MB
Resolution (pixel count) is only one of factors determining the quality of the final print. Pixel count is just as important as the optics and the sensor device of the camera or scanner, besides the exposure, density and other Photography techniques.
