PHOTOMETRICS HANDBOOK, 2nd Edition By Robert C. Mumm; Dozens of newly manufactured lighting instruments, and many old ones not included in the first edition, bring this second edition up to date. Photometric data-beam angles, field angles, footcandles and beam diameters at various throw distances, etc.-on over 500 theatrical lighting instruments make this an indispensable reference for lighting designers and electricians. index, charts, photos - 656 pages;ISBN: 0-911747-37-0. Published byBroadway Press