Is your camera telling your your images are in focus, but when you look through the viewfinder, the image looks out of focus?
If you’re ever in a situation where your pictures are coming out sharp but when you’re looking through your viewfinder, it looks out of focus, this might be because your viewfinder may not by “synced” to your eye!
This is called the diopter.
The option to adjust your viewfinder’s focus helps you adjust the focus to your own eyes, especially if you wear glasses but don’t want to wear glasses when looking through your viewfinder.
Most cameras have a little tiny dial on the side of the eyepiece. Rotating this doesn’t affect the focus of your image but instead it affects how your eye sees the image through the viewfinder.
To properly set the diopter, set your camera on something solid like a tripod. Make sure it’s on autofocus mode and press your shutter release halfway down forcing your camera to focus. Look through the viewfinder and without moving the camera, turn the diopter until it is in focus for you.
That’s pretty much it! You’ve actually dialed your eyeglass prescription into your camera. This is a simple trick for people with not so perfect vision enjoy taking photos more. It’s also more convenient because having glasses between you and your camera is just a hassle.