A good way to see what strength diopter you need is to take the lens off the camera, look through the finder, facing a white background, n look for the grid lines to be in focus or any details on the GG or screen. Once you find the sharpest one, that is the strength you need. You only have to focus on hte screen not an image through the lens, this is where it is projected and adjusted to

I think I can get use to "being" old but not the "getting" old part of it. I use to be able to see the pecker of a fly at 1/4 mile, now I can't tell the sex of an elephant at 40 paces.

see my new cure?