an air distance in the work location, determined to sustain the required insulation level for live working, and being ensured either by physical means or by strict instructions given to the worker
The distance from the front of the lens surface to the subject. The more frequently used term 'shooting distance' refers to the distance between the subject and the film plane
The distance from the front of the lens surface to the subject. The more frequently used term 'shooting distance' refers to the distance between the subject and the film plane.