Is there a proper way to set diopter correction?

[mike3996]

"Just turn the knob until the image is sharp" sounds like a simple enough method.

But what if a third of the range produces sharp image but the eye just strains more, possibly without the photograper realizing it?

 

[Irene McC]

The best way is not to turn the knob until the IMAGE is sharp, but until the information numbers and technical graphics are sharp in the viewfinder
(the aperture, shutter speed, etc - that sort of stuff)

 

[wee-pics]

For me the best way always is to take a newspaper and my best lens (1.8/75), look through the viewfinder without my spectacles on (I've only got +2.8 dioptries) and turn the knob till the smallest letters are sharp.

 

[Herman]

@mike3996 Hey Mike, interesting question, interesting answers.
Got to check what best for me.

 

[mike3996]

The best way is not to turn the knob until the IMAGE is sharp, but until the information numbers and technical graphics are sharp in the viewfinder
(the aperture, shutter speed, etc - that sort of stuff)

Agreed, I usually judge the sharpness of the focus rectangle.

 

[Richard]

When peering out through the viewfinder at your subject, ask them to peer back in the other direction to see if all the little blood vessels at the back of your eye are nicely in focus (will not work for electronic viewfinders) (or optical ones, to be honest).

-R

 

[Charzes44]

Put up a menu In the electronic viewfinder, if your camera has one. Turn the adjuster until the letters are at their sharpest!

 

[lucien]

I would put slice of pepperoni pizza about 5 feet away. And if you can count the # of pepperoni on the slice. It's sharp. Jk
I agree with Walter

 

[John King]

I adjust mine for when I'm wearing/looking through the distance script in my bifocals.