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Printers today need on average between 200 and 300 ppi (dpi) of image resolution information to print a high quality image on high quality paper. And I am going to make the assumption that most of us seldom print out a photograph larger than 8Ã10 inches.
Resolution and Image Size. The resolution of an image is the number of pixels per inch (PPI) (Some authors refer to resolution as total pixels for the image, such as 1200x1600 pixels, but we will refer to this as pixel dimensions).For computer display, 72 ppi is the common standard.he resolution of an image is the number of pixels per inch (PPI) (Some authors refer to resolution as total pixels for the image, such as 1200x1600 pixels, but we will refer to this as pixel dimensions).