fog level

noun

1. the density produced by the development of photographic materials that have not been exposed to light or other actinic radiation. It forms part of the characteristic curve of a particular material

Example Sentences

“Once you get up over the fog level, it will be very sunny and nice with all the recent snow we’ve had.”

From Seattle Times

Tony Pidgley, chairman of site developer Berkeley, said the crane driver was not in the crane because of the "fog level".

From BBC

This audible presence and visual absence of an active scene had a peculiar effect above the fog level.

From Project Gutenberg