Basic Photographic Sensitometry Workbook1977 - Photographic sensitometry - 40 pages |
Common terms and phrases
0.3 density 25 percent 3.0 LOG EXPOSURE amount of light areas arithmetic series average gradient base density brightest brightness range camera characteristic curve COMMON LOGARITHMS D(base D(max darkest object decrease DENSITY 2.0 density differences density of 2.0 density scale density vs log Development Minutes DUPLICATING or REVERSAL EASTMAN KODAK COMPANY EDITION EASTMAN KODAK equals example exponent exposed and processed exposes the film exposure latitude exposure scale film curves film is called film response curve film speed formula D gross fog log E scale log E unit log E value LOG EXPOSURE 2.8 log of 87 logarithmic series mantissa meter-candle-seconds negative characteristic normal exposure OPTICAL DENSITY paper curves paper grades percent 0.0 percent transmittance photographic papers plotted previous number processed film record the scene reduce the transmittance reproduced reversal processing scene photographed series of numbers shoulder shown slope speed point step wedge stops straight straight-line portion