Dioptric Adjustment Knob

If you use the dioptric adjustment knob without wearing glasses, the image in the viewfinder may appear blurry. The diopter adjustment knob works as a lens switching from near to far focus, and it only affects how your eye picks up the image. It works just like the device an eye doctor puts in front of you when checking your vision. By adjusting the diopter to suit your eyesight (with or without eyeglasses), the viewfinder image will look clearer. Therefore, if you have poor eyesight, it is recommended that you wear glasses while using the camera and adjust the diopter accordingly.

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