Hi, because it features a 5MP built-in camera, and the camera captures the image directly from the objective lenses, bypassing the eyepieces when you’re using the screen. 

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The black soft light filter has no darkening effect, the black soft light filter is used to soften the image and create a nice looking and blurry film effect so that the dark scene has a blurry era atmosphere. 

Step 1: Being careful not to touch the lens, cover the right objective lens (or close your right eye) and turn the central focusing dial until the image seen by the left eye is clear. Step 2: Cover the left lens (or close the left eye) and this time instead of turning the central focusing wheel, turn the diopter adjustment ring (located near the right eyepiece and displayed on the small image in the upper right) until the image is clear. Step 3: Finally look through the binoculars with both eyes until the image is clear and sharp.