Why do you often add a piece of colored glass in front of the camera when taking landscape photos?

When taking photos, especially when taking landscape photos, it is often necessary to add a piece of colored glass in front of the camera. Why? The colored glass added in front of the lens is called a color filter. This is because cyan and blue light are particularly sensitive on the negative, which will make this part of the photo particularly bright; Adding a yellow filter can absorb a lot of blue light and blue light scattered by the blue sky and prevent it from passing through, darkening the blue-green part of the photo and highlighting other parts.

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The colored glass added in front of the lens is called a color filter. The light absorbed by different color filters is different from the light allowed to pass. If you add a yellow filter in front of the camera when shooting blue sky and white clouds, the white clouds in the blue sky will be particularly clear.

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Such as the outline of white clouds; If a red color filter is added in front of the lens, because the red glass can absorb a lot of green light and blue light, the blue sky and green trees in the photo will be darkened, giving the photo a special effect, just like shooting in moonlight.

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It is also used to change the color difference and make the photos look better. Now photographers also think of many ways to take good-looking photos, that is, they think of many ways to take good-looking photos.