User manual POLAROID T-56 DATASHEET

[. . . ] Film Data Sheet T-56 4 x 5 Sepia Sheet Film Description Professional B&W Sheet Film 4 x 5 Inch 9 x 12 cm A panchromatic, medium-contrast film producing sepia-tone prints with excellent gradation and tonal range. Key Applications · Old time photography · Professional photography Compatible Hardware · Any instrument or camera equipped with a Model 545/545i Film Holder · MP-4+ Camera Film Speed ISO 400/DIN 27 Special Treatment The processing temperature affects the tone of the print. [. . . ] Keep discarded materials away from children, animals, clothing and furniture. Limited Warranty See information on the film box. "Polaroid" is a registered trademark of Polaroid Corporation, Waltham, MA 02451 USA. Film Data Sheet Technical Data T-56 Sepia Instant B&W Peel-Apart Film The information below represents the typical performance of Polaroid T-56 Sepia black and white peel-apart film. Specific film lots may vary. Recommended speed (ISO) Recommended processing time and temperature Resolution (1000:1) Contrast Spectral sensitivity 400/27o 45 sec. at 70oF/21oC Characteristic H&D curve for normal, hot and cold development 3 14 - 20 line pairs/mm Medium Panchromatic 55 0 F/13 0 C 70 0 F/21 0 C 95 0 F/35 0 C 2 Sample Density 1 0 -3 Processing time and temperature For best results process at temperatures above 60oF(16oC). o o F C Time in seconds 30 30 35 45 45 50 95 85 75 70 65 55 35 29 24 21 18 13 CRT Exposure Index* -2 Relative Log Exposure -1 0 0. 5 Density** Phosphor P-4 P-11 P-16 P-24 P-31 Intercept 93 113 174 Sample Density 3 H&D Curves @ 70o F/21o C 30 sec. 2 Characteristic H&D curve for normal, under and over development D-Max: The density value for the film's darkest black. In prints, the whiteness of the brightest highlight, relative to the unprocessed print. Slope: The positive ratio of the log E increments of the straight line region of the curve, as determined by the 1/4-3/4 increment method. The slope of an H&D curve indicates the overall contrast of a film: low contrast slopes less than 1. 10; medium contrast slopes from 1. 10 to 1. 70; high contrast slopes greater than 1. 70. 82 76 * Value measured in reciprocal ergs/cm2 to obtain desired density. [. . . ] Spectral Sensitivity: Shows the equivalent energy needed at each wavelength in order to activate the emulsion so that it produces a neutral density of . 75. [. . . ]