[. . . ] It is balanced for daylight and electronic flash exposure. Key Applications GridFilm Film Speed ISO 640/DIN 29 · · · · · · Healthcare documentation Medical imaging (clinical documentation) Law enforcement (domestic violence, child abuse, others) Jewelry documentation Manufacturing (ISO 9000 documentation) Other applications where measurement using grid lines is important Format 4 x 41/8 in. [. . . ] (10. 2 x 10. 5 cm) Compatible Hardware Image Area 35/8 x 27/8 in. (9. 2 x 7. 3 cm) Finish Glossy Exposures per Unit 10 exposures per pack · · · · · · · · Spectra AF, Spectra 2, Spectra Pro Spectra Law Enforcement Kit Jewelry Pro HealthCam ProCam Image, Image 2, Image Elite Minolta Pro Macro 5 SLR Special Treatment None Development Time 2 minutes approximately Alternative product T-990 (no grid lines) Caution This film uses a small amount of caustic paste. If any paste appears, avoid contact with skin, eyes and mouth and keep away from children and animals. If you get some paste on your skin, wipe it off immediately, then wash with water to avoid an alkali burn. 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. Sample Density Characteristic H&D curve for cold development 3 3 Characteristic H&D curve for hot development H&D Curves @ 95 oF/35 oC Blue Green Red H&D Curves @ 55 oF/18 oC Blue Green Red Sample Density 1 0 -3 -2 -1 0 -3 -2 -1 0 2 2 1 0 Relative Log Exposure Relative Log Exposure Film Data Sheet Technical Data Spectra Film Family Reciprocity law failure A wide range of shutter speeds can be used without loss of film speed or requirements for color filtration. For longer exposure times, some exposure compensation and filtration is suggested. Reciprocity The ability of the film to respond in a constant manner to a constant exposure (light intensity x time). [. . . ] Reciprocity The ability of the film to respond in a constant manner to a constant exposure (light intensity x time). [. . . ]