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Its wider range of colors helps you to easily edit photos on a computer. AEB (Auto Exposure Bracket) This feature automatically captures several images at different exposures to help you capture a properly-exposed image. AEL (Auto Exposure Lock) This feature helps you lock the exposure on which you want to calculate the exposure. AF (Auto Focus) A system that automatically focuses the camera lens on the subject. Your camera uses the contrast to focus automatically. AMOLED (Active-matrix organic light-emitting diode) / LCD (Liquid Crystal Display) AMOLED is a visual display that is very thin and light, as it does not need backlighting. LCD is a visual display commonly used in consumer electronics. This display needs a separate backlight, such as CCFL or LED, to reproduce colors. Aperture The aperture controls the amount of light that reaches the camera’s sensor. 167 Appendix > Glossary Camera shake (Blur) If the camera Is moved while the shutter is open, the entire image may appear blurred. This occurs more often when the shutter speed is slow. Prevent camera shake by raising the sensitivity, using the flash, or using a faster shutter speed. Alternatively, use a tripod or the OIS function to stabilize the camera. Cloud Computing Cloud computing is a technology that allows you to store data on remote servers and to use them from a device with internet access. Color space The range of colors that the camera can see. Color temperature Color Temperature is a measurement in degrees Kelvin (K) that indicates the hue of a specific type of light source. As the color temperature increases, the color of the light source has a more bluish quality. As the color temperature decreases, the color of the light source has a more reddish quality. At 5,500 degrees Kelvin, the color of the light source is similar to the sun at midday. Composition Composition in photography means arranging objects in a photo. Usually, abiding by 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 by the Japan Electronics and Information Technology Industries Association (JEITA). Depth of field The distance between the nearest and farthest points that can be acceptably focused in a photograph. Depth of field varies with lens aperture, focal length, and distance 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. DPOF (Digital Print Order Format) A format for writing printing information, such as selected images and number of prints, on a memory card. DPOF-compatible printers, sometimes available at photo shops, can read the information from the card for convenient printing. 168 Appendix > Glossary EV (Exposure Value) All the combinations of the camera’s shutter speed and lens aperture that result in the same exposure. EV Compensation This feature allows you to quickly adjust the exposure value measured by the camera, in limited increments, to improve the exposure of your photos. Exit (Exchangeable Image File Format) A specification to define an image file format for digital cameras created by the Japan Electronic Industries Development Association (JEIDA). Exposure The amount of light allowed to reach the camera’s sensor. Exposure is controlled by a combination of the shutter speed, the aperture value, and ISO sensitivity. Flash A speed light that helps to create adequate exposure in low-light conditions. Focal length The distance from the middle of the lens to its focal point(in millimeters). Longer focal lengths result in narrower angles of view and the subject is magnified. Shorter focal lengths result in wider angles of view. Histogram A graphical representation of the brightness of an image. The horizontal axis represents the brightness and the vertical axis represents the number of pixels. High points at the left (too dark) and right (too bright) on the histogram indicate a photo that is improperly exposed. 169 Appendix > Glossary H.264/MPEG-4 A high-compression video format established by international standard organizations ISO-IEC and ITU-T. This codec is capable of providing good video quality at low bit rates developed by the Joint Video Team (JVT). Image sensor The physical part of a digital camera that contains a photosite for each pixel in the image. Each photosite records the brightness of the light that strikes it during an exposure. Common sensor types are CCD (Charge-coupled Device) and CMOS (Complementary Metal Oxide Semiconductor). IP (Internet protocol) address An IP address is a unique number that is assigned to every device that is connected to the internet. ISO sensitivity The sensitivity of the camera to light, based on the equivalent film speed used in a film camera. At higher ISO sensitivity settings, the camera uses a higher shutter speed, which can r...
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