Apple MB673Z/A User Manual - Page 646

capture a. The process of taking the image received by the digital image sensor and camera processor and storing that information on the memory card in the camera. b. The process of recording an image in Aperture at the moment it is shot via a tethered camera. See also camera, digital image sensor, memory card, tethered shooting. center-weighted metering A type of metering that measures the light in the entire viewfinder but gives extra emphasis to the center of the frame. Center-weighted metering is the most common type of metering in consumer cameras. See also evaluative metering, light meter, spot metering. charge-coupled device (CCD) A type of digital image sensor that records the pixel information row by row. See also complementary metal oxide semiconductor (CMOS), digital image sensor. chromatic spread The extent of colors affected by the hue, saturation, and luminance parameters in the Color adjustment. See also adjustment, Color adjustment. Clone brush A type of Retouch brush in Aperture used to correct and obscure imperfections in an image by copying pixels from a similar-looking area of an image and pasting them over the area with the pixels you want to replace. See also Repair brush, retouching, Retouch tool. close-up An image in which the subject usually appears within 3 feet of the camera. For example, head shots are often referred to as close-ups. A shot of an ant on a flower's petal, where the ant fills a majority of the frame, is also a close-up. CMYK A working space used for print pieces combining cyan, magenta, and yellow inks in different combinations to create a color that reflects the proper color of light. Black ink (K) is added to the image last to generate pure black on the page. See also subtractive color, working space. Color adjustment An adjustment in Aperture used to adjust hue, saturation, and luminance on a color-by-color basis, as well as chromatic range. See also adjustment, chromatic spread, hue, luminance, saturation. color cast An unnatural tint in an image due to a lack of color balance. Color casts are often caused by artificial light sources such as interior lighting. Color casts in images are commonly removed by adjusting levels, tint, or white balance. See also White Balance adjustment. color channels The individual channels into which color information for digital images is divided. Each individual color channel represents one of the three individual primary colors that combine to represent the final image. Each channel has a bit depth; most digital image files have 8 bits per channel, meaning that there are 256 levels of color for each channel. See also bit depth, color depth. 646 Glossary