What does a polarizer do?

Polarizer is a lens made according to the polarization principle of light, which can be used to exclude and filter the direct light in the beam, so that the light enters the eye visual image on the right transmission axis and the field of vision is clear and natural.

2. Improve contrast and color saturation.

The working principle of polarizer is to selectively filter light from a certain direction. By filtering out a lot of polarized light in diffuse reflection, the light intensity in the sky is weakened, the sky is darkened and the contrast between the blue sky and white clouds is increased. Look at the viewfinder and rotate the front mirror when shooting. In the viewfinder, the effect is most obvious when the sky is darkest, and the difference between the darkest and the most appearance is 90 degrees.

Extended data:

Polarizer application

1. When driving, it will not be disturbed by the sunlight and the multiple reflections of the vehicles in front;

2. When fishing, the water waves shine in the sunlight, but you don't feel uncomfortable at all, but feel comfortable and carefree;

3. When skiing, you don't have to worry about reflection and ultraviolet rays, you can enjoy gliding;

4. When it rains, the road traffic signs overflowing with rain clearly appear in front of your eyes;

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