PPI: stands for Pixels per Inch. PPI describes the number of pixels per inch in a photo. PPI is a function of the number of pixels the camera's sensor supports (also known as megapixels) and the size of the photo. To calculate a photo's PPI simply multiply the page length by its width in inches. The result is the number of square inches on the page. Now divide the number of pixels the sensor supports by the number of square inches. The result is the number of pixels per square inch. All that is left to do is to find the square root of this number. Following is a table that shows the PPI for various page sizes for a 5 megapixel camera.
page size 4X6 - 456 PPI page size 5X7 - 377 PPI page size 8X10 - 250 PPI page size 11X14 - 180 PPI page size 16X20 - 125 PPI page size 20X30 - 91 PPI
Ziv Haparnas has sinced written about articles on various topics from Digital Camera, Digital Photos and Digital Camera. Ziv Haparnas is a technology veteran and writes about practical technology and science issues. This article can be reprinted and used as long as the resource box including the backlink is included. You can find more information digital photo printing prin. Ziv Haparnas's top article generates over 74000 views. to your Favourites.