The use of gradient gray mirror

Usually, when taking landscape photos with the sky as the background, the exposure (EV value) between the sky and the ground is different by several levels of aperture, either the sky is overexposed or the ground is underexposed, with no details. Gradual grey mirror can effectively solve this problem. By adjusting the direction of color change distribution through the rotation of the lens, the gray part is blocked in the sky, which reduces the brightness of the sky, balances the exposure difference between the sky and the ground, and highlights the details of the cloud.

Gradient grey mirror is mainly used to obtain the correct exposure combination allowed by the camera under the conditions of shallow depth of field photography, low-speed photography and strong light, and is also often used to balance tones.