Aspect Ratio - The relationship of an image's horizontal length and vertical height. The horizontal length number is placed first (i.e. 3:2).

Process Color - The colors Cyan, Magenta, Yellow, plus Black, used for offset printing.

Tint - Some percentage of a solid ink. Tints are created by using a screen to create the impression of a lighter color when the ink is printed onto paper or another medium.

OCR (Optical Character Recognition) - Software that allows the computer to convert documents that have been scanned and saved in a graphics format back into editable text.

Kerning - The fine adjustment of the spacing between pairs of type characters in a word to create visually pleasing and consistent spacing.

IX [Information Exchange] - This is the designation for how the camera, film and photofinishing equipment communicate with each other. There are two types of Information Exchange. Optical Information Exchange simply exposes marks on the film in a reserved area. This is used to tell the photofinisher what format of picture you selected (C, H, or P) when the photo was taken. Magnetic Information Exchange has even more information. It can tell the photofinisher about the conditions that the picture was taken so that it can be printed to its best. It can also record greetings and information (date, time, name of event, etc.) which can be printed on the back (see Backprinting).

Cropping factor - Many digital SLRs use an image sensor that is smaller than 35mm film. If you attach a lens to one of these cameras, its 35mm equivalency will be multiplied by the cropping factor-a manufacturer's specification. For example, if your digital SLR has a cropping factor of 1.6x, then a 50mm lens mounted on your camera will have a 35mm equivalency of 80mm. That is, the 50mm lens will yield the same field of view as an 80mm lens on a 35mm camera.

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