News3 mins ago
Sunday Times Concise
3 Answers
20 DOWN: Film speed unit: D?N
THANKS ALL
THANKS ALL
Answers
Best Answer
No best answer has yet been selected by cruciverbals. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.DIN
a formerly used logarithmic expression of the speed of a photographic film, plate, etc, given as –10log10 E, where E is the exposure of a point 0.1 density units above the fog level; high-speed films have high numbers http:// www.col linsdic tionary .com/di ctionar y/engli sh/din
a formerly used logarithmic expression of the speed of a photographic film, plate, etc, given as –10log10 E, where E is the exposure of a point 0.1 density units above the fog level; high-speed films have high numbers http://