Glossary
Digitalzoom:Unlike optical zoom, digital zoom does not increasetile amount of visible detail. Instead,details vis- ible using optical zoom are simply enlarged, producing a slightly "grainy" image.
DPOF(Digital Print Order Format):A standard that allows pictures to be printed from "print orders" stored | mml_° |
in internal memory or on a memory card. Tile information in the order includes the pictures to be |
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printed and the number of copies of each picture. | DPOF |
EV (Exposure Value):The exposure value is determined by the sensitivity of the image sensor and the amount of light that enters tile camera while the image sensor is exposed. Eachtime tile amount of light doubles, EV increasesby one; each time the amount of light is halved, EVdecreasesby one. The amount of light entering the camera carl be controlled by adjusting aperture and shutter speed.
ExifPrint:A standard that allows information stored with pictures to be used for optimal color reproduction dur- ing printing.
JPEG(Joint Photographic Experts Group):A compressed file format for color images. The higher tile compression rate,the greater tile lossof information and more noticeable drop in quality when the picture is displayed.
MotionJPEG:An AVI (Audio Video Interleave) format that stores images and sound in a single file, with the images recorded in JPEGformat. Motion JPEGfiles carl be played in QuickTime 3.0or later.
Smear:A phenomenon specific to CCDswhich causeswhite streaksto appear when very bright lig ht sources,such asthe sun or reflected sunlight, appear in the frame.
Whitebalance:Tile human brain automatically adapts to changes in the color of light, with tile result that objects that appear white under one light source still appear white when the color of the light source changes. Digital cameras carl mimic this adjustment by processing images according to the color of tile light source. This process is known as "white balance."