The Diopter

Another question I have been asked a number of times is “what in the world is this small wheel by my viewfinder?” That “wheel” is called the diopter and it serves a very handy purpose for those that need it. I included a shot here of the top of a Canon camera with the diopter circled in red. Not everyone has 20/20 vision, many people wear glasses or contacts to make up for our eye’s natural failings and this is where the diopter comes in. When using a camera, it is often not comfortable to wear your glasses as they …