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 light triangle photography.
The three elements are.
This opening is what controls how much or little light can pass through the camera lens and onto the camera s sensor.
Aperture the size of the opening in the lens when a picture is taken.
Each of the three aspects of the triangle relate to light and how it enters and interacts with the camera.
Shutter speed the amount of time that the shutter is open.
Don t worry this isn t a geometry lesson.
Aperture shutter speed and iso.
It is measured in seconds.
I appreciate this is a fairly complex subject and it is something.
The exposure triangle is a common way of associating the three variables that determine the exposure of a photograph.
Hopefully this post has helped explain the exposure triangle photography concept in some detail.
Light passes through a hole and is captured on a medium.
To double the amount of light we need to double the length of the exposure.
The depth of field is a byproduct of this concept.
Iso the measure of a digital camera sensor s sensitivity to light.
Aperture shutter speed and iso.
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.