Index Abbe number (dispersive power), 56­7 Active matrix LCDs (AMLCDs), 184 `Active pixel sensor' (APS), 148 Adaptation and eye, 18­19 Additive method of colour reproduction, 5 Adobe: Lightroom, 213 Photoshop software, 128­9, 178, 233 RGB (1998) files, 390 sRGB files, 390 Adobe digital negative files see DNG files Aerial photography: approach and organization, 361­2 equipment and techniques, 362­3 purposes, 361 survey (3D), 333 ultraviolet, 316 AF see autofocus Agents and photography, 426 Agitation and film processing, 278 Back-illuminated sensor technology, 159­60 Barn doors (lighting control), 101­2 Barrier filters, 312 Bayer: colour filter array, 34, 151, 161 pattern, 150, 156, 158­9 Bayer, B.E., 150 Bilinear interpolation, 34 Binary digit system, 198­9 Biological decay and archiving, 384 Bit depth (colour depth): digital images, 201­2 scanners, 179­80 Black body radiator, 6 Black and white: colour prints from negatives, 304­5 infrared film, 267­8 negatives, 273 prints, 275 slide film, 266