It is measured in seconds.
The light triangle photography.
The exposure triangle is a common way of associating the three variables that determine the exposure of a photograph.
The exposure triangle sounds like the name of a complex spy novel but in reality this is the term used for the three fundamental elements of exposure.
The key part is controlling the amount of light and focusing the light so we get a correctly exposed and in focus image.
Hopefully this post has helped explain the exposure triangle photography concept in some detail.
For example moving from a shutter speed of 1 60 s to 1 30 s will add a stop of light because the shutter will remain open twice as long.
Each of the three aspects of the triangle relate to light and how it enters and interacts with the camera.
The three elements are.
To double the amount of light we need to double the length of the exposure.
Don t worry this isn t a geometry lesson.
Aperture shutter speed and iso.
Iso the measure of a digital camera sensor s sensitivity to light.
I appreciate this is a fairly complex subject and it is something.
The depth of field is a byproduct of this concept.
Aperture shutter speed and iso.
Shutter speed is probably the easiest of the exposure triangle sides to understand.
This exposure triangle concept refers to how large or small the opening is thru the lens as you can see in the above illustration.
Light passes through a hole and is captured on a medium.