Exposure Book Errata

Errata

Photographic Exposure Calculations and Camera Operation
by Michael G. Prais, Ph.D.

Page
295 us – f = 4h/3 us – f = h/3
297 Awhole = round( 2 log(Acalc))/2 log2(Awhole) = round( 2 log2(Acalcd))/2
297 Awhole = round( 6 log(Acalc))/6 log2(Awhole) = round( 6 log2(Acalcd))/6
215 (currently 3%) (currently 9%)
143 320 through 520 320 through 540
143 R = K/C = 10.6/520 = 0.0204 R = K/C = π 10.6/540 = 0.0617
143 R = K/C = 13.4/320 = 0.0419 R = K/C = π 13.4/320 = 0.1316
143 R = K/C = 12.0/430 = 0.0279 R = K/C = π 12.0/430 = 0.0877
143 use a 3% reflectance use a 9% reflectance

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