The Trio Cheat Sheet is an infographic I made for my first book, DSLR Fundamentals: An Interactive Introduction To Photography.
It’s a visual reference guide for manual settings of the exposure triangle: Aperture, Shutter Speed, and ISO. A quick glance gives you an idea of how each setting affects the others. It should help solve problems with difficult shooting scenarios that, at first, might seem impossible.
Go ahead and click it to open in the modal window gallery, then click the button in the upper right to expand it in fullscreen view. Right-click on the enlarged image to save it to your desktop. Better yet, save it to your phone – that way it will be handy on your next photography outing.