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product name:Polarizer Polarizer CPL
Product introduction:This product is circularly polarized, mainly used to increase color density, deepen the sky blue, highlight white clouds, and eliminate the reflected light from non-metallic surfaces such as glass or water.
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Polarizer Polarizer, also called polarizer, or PL for short, is a kind of color filter. The excellent function of the polarizer is to selectively let light that vibrates in a certain direction pass through. It is commonly used in color and black and white photography to eliminate or weaken the strong reflection of non-metallic surfaces, thereby eliminating the light spots. For example, in scenery and landscape photography, it is often used to express the texture of objects in strong reflections, highlight the scenery behind the glass, darken the sky, and express blue sky and white clouds. A piece of tiny polarizing crystal with orientation effect is sandwiched by two pieces of optical glass(Like mica)composition.
Polarization type:Circular polarization(Circular polarization)
product material:Optical glass
【The role of CPL】:
1. Reduce the brightness of the blue sky. By rotating the lens to absorb many polarized light in the diffuse reflection, the intensity of the sky light can be reduced, the sky is darkened, and the contrast between the blue sky and white clouds can be increased.
2. Control the reflection of non-metallic. When the light is projected on the surface of smooth objects, such as water, glass, painted furniture, etc., it will usually produce a stronger single reflection light, which will become the highlight point in the photographic picture. The shooting is affected, because the CPL lens is added for shooting to improve the image quality and the sharpness of the picture.
3. Replacing the neutral ash filter CPL will reduce the exposure by 1-2 stops, which can replace the effect of ND4/ND2.![](https://img.alicdn.com/imgextra/i1/183666447/O1CN01qnMhNx1xUm2t2s29P_!!183666447.jpg)
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