User manual POLAROID T-56 FILM DATA SHEET

[. . . ] 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. Prints processed in cold temperatures are more brown tone and in hot temperatures more yellow tone. [. . . ] If you get some paste on your skin, wipe it off immediately, then wash with water to avoid an alkali burn. If eye contact occurs, quickly wash the area with plenty of water and see a doctor. 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. D-Min: The lowest density value that a film exhibits. 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. [. . . ] Reciprocity failure occurs during very long or very short exposures, requiring the photographer to increase exposure. 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. [. . . ]