The Light Triangle Photography

Light passes through a hole and is captured on a medium.

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. I appreciate this is a fairly complex subject and it is something. Each of the three aspects of the triangle relate to light and how it enters and interacts with the camera. Don t worry this isn t a geometry lesson.

Shutter speed is probably the easiest of the exposure triangle sides to understand. The three elements are. Hopefully this post has helped explain the exposure triangle photography concept in some detail. Aperture shutter speed and iso.

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 the amount of time that the shutter is open. 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 depth of field is a byproduct of this concept.

Iso the measure of a digital camera sensor s sensitivity to light. 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. To double the amount of light we need to double the length of the exposure. 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 exposure triangle is a common way of associating the three variables that determine the exposure of a photograph.