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rsmateo Posts: 1

Could somebody explain to me the difference between megapixel and DPI. I was editing pictures taken with my K810i and although the picture size is 2048 X 1536, the properties showed only a horizontal and vertical dpi of 72.
Could this be increased to the 300 dpi ?
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Posted: 2007-11-12 21:27:09
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tranced Posts: > 500

DPI = Dots Per Inches.

A pixel (short for picture element, using the common abbreviation "pix" for "pictures") is a single point in a graphic image. Each such information element is not really a dot, nor a square, but an abstract sample. With care, pixels in an image can be reproduced at any size without the appearance of visible dots or squares; but in many contexts, they are reproduced as dots or squares and can be visibly distinct when not fine enough. The intensity of each pixel is variable; in color systems, each pixel has typically three or four dimensions of variability such as red, green, and blue, or cyan, magenta, yellow, and black.

The measures dots per inch (dpi) and pixels per inch (ppi) are sometimes used interchangeably, but have distinct meanings especially in the printer field, where dpi is a measure of the printer's resolution of dot printing (e.g. ink droplet density). For example, a high-quality inkjet image may be printed with 200 ppi on a 720 dpi printer.

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[ This Message was edited by: tranced on 2007-11-12 20:41 ]
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Posted: 2007-11-12 21:41:10
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