![]() The current unit of luminance is the cd/m2, or candela per meter squared, though in old textbooks you’ll find it called “nit”, “foot-lambert” or “stilb”. Specifically, luminance is a measure of how much light is coming off of a particular object and hitting your eye - or camera lens. On the other hand, you can say, “I just watered my lawn with exactly 2 fl oz of water per square inch.” That’s luminance.īrightness is a subjective judgement. It’s like the difference between wetness and volume of water: You can say “my lawn is wetter” or “my lawn isn’t wet enough”, but you would never say “my lawn is exactly 5 wets today”. Luminance is an objective measure of how much light an object is giving off at a certain distance. ![]() Brightness is a subjective judgment as to how bright a picture is. What is luminance?įirst things first: even though some people will use them interchangeably, luminance is not the same thing as brightness. ![]() This time, let’s talk about luminance and the inverse-square law. Previously, we talked about quality of light. Too many shooters focus on camera and lens, but that’s like a sculptor obsessing over what chisel to use and ignoring the giant block of marble in front of him. One of the more common mistakes many beginning and intermediate videographers make is confusing our tools for our medium. Let’s talk about luminance and the inverse-square law. Selecting a region changes the language and/or content on medium isn’t our hardware.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |