The Light Triangle Photography

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. This opening is what controls how much or little light can pass through the camera lens and onto the camera s sensor. To double the amount of light we need to double the length of the exposure. Light passes through a hole and is captured on a medium. The depth of field is a byproduct of this concept.

Hopefully this post has helped explain the exposure triangle photography concept in some detail. Aperture shutter speed and iso. Don t worry this isn t a geometry lesson. It is measured in seconds.

This exposure triangle concept refers to how large or small the opening is thru the lens as you can see in the above illustration. The three elements are. Shutter speed the amount of time that the shutter is open. The key part is controlling the amount of light and focusing the light so we get a correctly exposed and in focus image.

Shutter speed is probably the easiest of the exposure triangle sides to understand. Iso the measure of a digital camera sensor s sensitivity to light. Each of the three aspects of the triangle relate to light and how it enters and interacts with the camera. 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.

Aperture shutter speed and iso.