If you are a beginner or a student and are confused by the "Exposure Triangle" this tool can help you learn the three aspects -- ISO, Aperture, and Shutter Speed. It will help you understand the effect each has on an image and how to apply different settings in Aperture Priority, Shutter Priority, or Manual Modes.This tool can help you get out of Auto mode and stop relying on the camera to "decide" what you want. Take control of your camera!Tool is easy to print yourself, lamination optional,