Glossary of terms1459 AppendixEV (Exposure Value)A system for measuring exposure. EV0 is when the aperture is at F1 and the shutterspeed is 1 second. The EV then increases by 1 each time the aperture increases byone F stop or the shutter speed increases by one increment. EV can also be used toindicate brightness and ISO.ExposureThe amount of light used to capture an image. The exposure is determined by thetime the shutter is open (shutter speed) and the amount of light that passes throughthe lens (aperture).Image SizeThe size of an image expressed by the number of pixels that make up the image. Forinstance, a picture taken with an image size of 640 × 480 fills the computer screenwhen the monitor setting is 640 × 480. However, if the monitor setting is1,024 × 768, the picture only takes up part of the screen.ISOA method for indicating film speed by the International Organization forStandardization (ISO) (ex. “ISO100”). Higher ISO values indicate greater sensitivityto light, so images can be exposed even in low-light conditions.JPEG (Joint Photographic Experts Group)A compression format for still images. Photographs (pictures) taken using thiscamera are recorded onto the card in JPEG format. By downloading these imagesto a computer, users can edit them using graphics application software or view theimages using an Internet web browser.Noise reductionWhen shooting in dark places, shutter speeds become slower as there is less lightfocused on the CCD. During long exposures, signals are generated by parts of theCCD where no light is focused and are recorded on the picture as noise. When noisereduction works, the camera automatically reduces the noise to produce clearerimages.NTSC (National Television Systems Committee) / PAL (PhaseAlternating Line)Television formats. NTSC is mainly used in Japan, North America and Korea. PALis mainly used in Europe and China.Program autoAlso called Program AE mode. The camera automatically sets the best shutterspeed and aperture for the shot.PictBridgeA standard for connecting digital cameras and printers of different makers andprinting out pictures directly.PixelsA pixel is the smallest unit (dot) used to make up an image. Clear large-sized printedimages require millions of pixels.
