Appendixes 145GlossaryCompositionComposition in photography means arranging objects in a photo. Usually, abidingby the rule of thirds leads to a good composition.DCF (Design rule for Camera File system)A specification to define a file format and file system for digital cameras created bythe Japan Electronics and Information Technology Industries Association (JEITA).Depth of fieldThe distance between the nearest and farthest points that can be acceptablyfocused in a photograph. Depth of field varies with lens aperture, focal length, anddistance from the camera to the subject. Selecting a smaller aperture, for example,will increase the depth of field and blur the background of a composition.Digital zoomA feature that artificially increases the amount of zoom available with a zoom lens(Optical zoom). When using the Digital zoom, the image quality will deteriorate asthe magnification increases.ACB (Auto Contrast Balance)This feature automatically improves the contrast of your images when the subject isbacklit or when there is a high contrast between your subject and the background.AEB (Auto Exposure Bracket)This feature automatically captures several images at different exposures to helpyou capture a properly-exposed image.AF (Auto Focus)A system that automatically focuses the camera lens on the subject. Your camerauses the contrast to focus automatically.ApertureThe aperture controls the amount of light that reaches the camera’s sensor.Camera shake (Blur)If the camera is moved while the shutter is open, the entire image may appearblurred. This occurs more often when the shutter speed is slow. Prevent camerashake by raising the sensitivity, using the flash, or using a faster shutter speed.Alternately, use a tripod, the DIS or OIS function to stabilize the camera.
