Traditional Culture Encyclopedia - Photography and portraiture - What's the difference between a medium gray gradient mirror and a neutral gray filter?
What's the difference between a medium gray gradient mirror and a neutral gray filter?
The filter is an additional mirror mounted on the lens. Strictly speaking, a uv mirror is a filter. Its function is to filter ultraviolet rays and reduce the interference of ultraviolet rays on film, but it has no substantive effect on digital images. The two filters here are very common in landscape photography, and they are usually used together. Neutral gray gradient means that one side is gray and has dimming effect, the other side is normal and the middle is smooth. When in use, it is used to balance the light in a large light ratio environment, such as shooting scenes of the sky and the ground. Turning the neutral gray side to the blue sky can darken the sky light, make the sky more saturated and avoid overexposure. The reducing mirror is pure gray, which reduces the incident light and is convenient for long-time exposure. The two gears and three gears mentioned in it reflect the depth of the lens, and the first gear of the reducer can slow down the shutter by one gear, and so on.
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