by Rudy WinstonCheck out the entire article on the Canon Digital Learning Center. Also, check out our own article, "Comparing Electronic Viewfinders to Optical Viewfinders."
There’s no question that the completely electronic viewfinder in some recent interchangeable-lens cameras — think of “mirrorless” cameras, like Canon’s EOS M-series models — brings some cool features to their users. Some of these include the ability to see the effect of changes in camera settings, like exposure or white balance, and to see additional information like histograms and so on, before a picture is taken.
But there’s a lot of benefit to the traditional “optical” viewfinder, used in EOS digital SLRs like the EOS Rebel T7i and EOS 77D. We’ll look at those benefits in this article.