GlossaryAppendixes 151ExposureThe amount of light allowed to reach the camera’s sensor. Exposure is controlled bya combination of the shutter speed, the aperture value, and ISO sensitivity.FlashA speed light that helps to create adequate exposure in low-light conditions.Focal lengthThe distance from the middle of the lens to its focal point (in millimeters). Longerfocal lengths result in narrower angles of view and the subject is magnified. Shorterfocal lengths result in wider angles of view.HistogramA graphical representation of the brightness of an image. The horizontal axisrepresents the brightness and the vertical axis represents the number of pixels. Highpoints at the left (too dark) and right (too bright) on the histogram indicate a photothat is improperly exposed.H.264/MPEG-4A high-compression video format established by international standardorganizations ISO-IEC and ITU-T and developed by the Joint Video Team (JVT). Thiscodec is capable of providing good video quality at low bit rates.DIS (Digital Image Stabilization)This feature compensates in real-time for shaking and vibrating while shooting.There can be a certain amount of image degradation compare to Optical ImageStabilization.EV (Exposure Value)All the combinations of the camera’s shutter speed and lens aperture that result inthe same exposure.EV CompensationThis feature allows you to quickly adjust the exposure value measured by thecamera, in limited increments, to improve the exposure of your photos. Set the EVcompensation to -1.0 EV to adjust the value one step darker and 1.0 EV to one stepbrighter.Exif (Exchangeable Image File Format)A specification to define an image file format for digital cameras created by theJapan Electronic Industries Development Association (JEIDA).
