How many conditions are there for the ISO standard transmission density sum f/4.5, f/1.6 projected transmission density? Transparent illumination is mainly used for transparent illuminators (paper boxes), and is used for viewing images, contact impression images, and other aspects of the illumination system. Projection density is the main amount of light used for measuring the amount of image. However, the main method used for quantitative density measurement is image measurement, but it is also commonly used for optical devices and other transparent materials.
ISO 5-2:2001 history
2009ISO 5-2:2009 Photography and graphic technology - Density measurements - Part 2: Geometric conditions for transmittance density
2001ISO 5-2:2001 Photography - Density measurements - Part 2: Geometric conditions for transmission density
1991ISO 5-2:1991 Photography; density measurements; part 2: geometric conditions for transmission density
1985ISO 5-2:1985 Photography; Density measurements; Part 2 : Geometric conditions for transmission density