Eyeglasses - on or off?

RDKirk wrote in post #14987358
As a bit more information, the focusing system is set to present the focus screen at about 1 meter from your eye. So you should normally wear the eye correction you need to see sharply at one meter.

RDKirk wrote in post #14987358
If your correction is light, the diopter adjustment may be satisfactory. There is a trick to doing it though:

The principle is that you want to your eye to focus on the screen itself. First either remove the lens or set the focus to its closest point and train the camera on a blank wall--just so there is no scene detail for your eyes to try to focus on. You want your eyes to concentrate on the autofocus marks, not any object beyond.

Set the diopter adjustment it to a strongly defocused position.

Then move the diopter wheel quickly back and forth, passing right through the point of sharp focus beyond it to the opposite defocused position.

Seesaw the wheel back and forth until you feel the point of sharpness and stop at it. Don't try to focus slowly to that point or your eye will accomodate to "almost in focus." You can best find the sharp point when you're moving quickly from the defocused extremes.

As a bit more information, the focusing system is set to present the focus screen at about 1 meter from your eye. So you should normally wear the eye correction you need to see sharply at one meter.