Originally posted by Steve.Ledger Though I have to say, EVFs are fantastic out in the sun in my experience. Not sure what you've been looking through but my OMDs are terrific.
Olympus OM-D E-M5, Fujifilm X-T1 and Sony Alpha A7. All of them seemed weak when I took them out in the Texas summer sun. In particular, when I was comparing the Fuji X-T1 and a Pentax K-S2, the contrast between the bright, beautiful, pentaprism viewfinder and the struggling EVF was very obvious. Keep in mind too that I wear glasses, so I can't bury my eye down into the eyecup.
However. . . As soon as I started wearing a shade hat, as long as I could keep sun off my eye and off the eyepiece, then the EVF was no longer a problem. (It wasn't beautiful like the pentaprism, but it wasn't a problem.) And of course, when faced with dim lighting situations, then the EVF has all the advantages.