Is there a eye cup available that blanks out the eye you are not using when looking into viewfinder ? I can’t see anything but thought there was. I have a canon 60d .
I find with both eyes open I don’t get a clear view through the viewfinder and if I close one eye it’s very uncomfortable after a while . Only one eye looks through the viewfinder so for me it’s a very straight forward question.
Yeah, having shot in a few worrying situations, I agree both eyes open, one taking photos, one looking for projectiles.I know what you mean about keeping both eyes open being uncomfortable, but if you use your dominant eye through the view finder it should be something you could get used to.
I've just got back from four days photographing from the "Pit" at a music festival and keeping both eyes open can be, shall we say, to your advantage.