Learning about Exposure – The Exposure Triangle
Bryan Peterson has written a book entitled Understanding Exposure. I highly recommend you read it if you want to venture off of your digital camera’s Auto mode and start experimenting with its manual settings.
In Understanding Exposure, Bryan illustrates the three main elements that need to be considered when setting your exposure. He calls them the “exposure triangle.”
Each of the three aspects of the triangle relates to light and how it enters and interacts with your camera.