Hi everyone, I started using this viewfinder a little this weekend and I'm really enjoying it. It's comfortable, and I'd buy it again. While it was initially pleasant to look at the screen when I first got the M3, it's become a bit of a hassle so i need it. The diopter adjustment seems to make a big difference compared to other SLR viewfinders, but I wear glasses, and if I set it perfectly for when I'm wearing glasses, it won't be as good for when I'm not. I don't remember this with SLRs. Now I've adjusted it by turning the dial almost all the way counterclockwise—not all the way to the limit you reach by turning it counterclockwise, but almost—and I did the adjustment while wearing glasses, leaving a small compromise for when I'm without them. To know if the adjustment is correct, do I need to see clearly through the viewfinder without having to close both eyes? because I wonder if this is the right adjustment, otherwise there is the risk that I squint too much and after I look through the viewfinder for a while I "struggle" to see normally... it happened to me a bit last Sunday when I hadn't made any adjustments and I started using it, I had to squint too much to see but in reality I should have turned the dial counterclockwise to look easier.
you shouldnt need to squint with the eye you are using to look through the evf, i have the M50 which has a built in evf, for me i only need glasses for reading, i shoot through the evf 99% of the time, i have the screen folded shut, never use it 99% of the time, i only use the evf with no glasses on however when i use the rear screen i use my standard reading glasses like 3.0x mag i naturally shut one eye when looking through the evf because i get a double vision and it also washes out what i can see as i have a lazy right eye so i get half my vision full of day light etc while i'm wanting all the focus on the evf i dont think it will help but have you tried wearing a pirate patch over the non evf eye to see if it lessens the effect of post squinting? another thing i have done on the diopter wheel is to mark a thin line across it and the body in silver so i can see at a glance if its been bumped off the correct setting
