[. . . ] 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. [. . . ]