User manual POLAROID T-57 FILM DATA SHEET

[. . . ] Film Data Sheet T-57 4 x 5 Black & White Sheet Film Description 3URIHVVLRQDO % : 6KHHW )LOP [ LQFK 10. 2 x 12. 7 cm High-speed, medium-contrast, medium-grain, panchromatic general purpose black & white print film. ILOP 7\SH Key Applications +LJK 6SHHG Film Speed ISO 3000/DIN 36 · Electrophoresis gel documentation · Scientific documentation (especially applications involving low light levels) · Close-up photography Compatible Hardware Any camera or instrument equipped with a Model 545 or 545i Film Holder. Special Treatment Picture area approximately off center about 1/8 in. (3 mm) toward the thick end of the film holder. [. . . ] 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-57 Instant B&W Peel-Apart Film This information represents the typical performance of Polaroid T-57 black and white film. Specific film lots may vary. Recommended speed (ISO) Recommended processing time and temperature Resolution (1000:1) Contrast Spectral sensitivity 3000 / 36o Characteristic H&D curve for normal, hot and cold development 3 55oF/13 oC 70oF/21 oC 15 sec. at 75oF/24oC 95oF/35 oC 14 - 17 line pairs/mm Medium Panchromatic Sample Density 1 0 -3 -2 Relative Log Exposure -1 -0 2 Processing time and temperature For best results process at temperatures above 60oF(16 oC). o F o C Time in seconds 15 15 20 30 45 Exposure Adjustment -1/3 stop None None None 1/3 stop 95 75-90 70 65 55 35 24-32 21 18 13 Characteristic H&D curve for normal, under and over development 3 H&D Curves @ 7 0 oF/21 oC 15 sec. 90 sec. 2 Sample Density 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. 1 0 -3 -2 -1 -0 Relative Log Exposure 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. Film Data Sheet Technical Data T-57 Instant B&W Peel-Apart Film Reciprocity law failure A wide range of shutter speeds can be used without loss of film speed. [. . . ] 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. [. . . ]