Some digital cameras have a diopter adjustment that helps improve the clarity of the viewfinder. By adjusting a dial, lever or knob located near the viewfinder, sharpness and focus changes.

You may be able focus the viewfinder to match to your eyesight, be it near or farsightedness. In some cases, you may not have to wear eyeglasses when using the camera.

As the dial is rotated, the viewfinder image comes in and out of focus. Make adjustments while actually looking through the viewfinder until the scene is sharpest. Better yet, if your camera has focus brackets, keep your eye on them until they come into sharp focus.

A word of caution

Be careful not to stick your finger in an eye while making diopter adjustments!