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					Title: What is PPI – Pixels Per Inch? Word Count: 202 Summary: The term PPI is not used much. Many people confuse PPI with DPI or have never heard the term PPI. PPI is a measurement of the quality of a print and understanding this term and what the number means can help you determine the right sizes and resolutions for your next digital photo print. Keywords: ppi, pixels per inch, photo resolution, photo quality, print quality, dpi, photo printing, printing Article Body: The term PPI is not used much. Many people confuse PPI with DPI or have never heard the term PPI. PPI is a measurement of the quality of a print and understanding this term and what the number means can help you determine the right sizes and resolutions for your next digital photo print. 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 page page page page page size size size size size size 4X6 - 456 PPI 5X7 - 377 PPI 8X10 - 250 PPI 11X14 - 180 PPI 16X20 - 125 PPI 20X30 - 91 PPI


				
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posted:6/3/2009
language:Italian
pages:1
Description: Photography plr articles