CPL Filter
CPL Filter

CPL full name is: Circular-Polarizing Filters that is, circular polarizing filters, mainly used to eliminate harmful reflected light, improve the clarity and expression of the image. Eliminate reflected light: Eliminate light reflected from glossy surfaces such as water or glass. Increase color saturation: The ability to make the colors of blue skies, green leaves, mountain ridges, buildings, etc. more vibrant. The circular polarizing CPL is designed for use with AF-focused and digital cameras and is easy to rotate and adjust. Also compatible with MF manual bodies.
CPL structure: there are 2 pieces of glass sandwiched between a CPL polarizing film, the use of the filter needs to be slowly rotated, generally in the direction of 90 degrees from the direction of light to use, the effect is maximized. Generally will reduce the exposure by 2 stops, while it will affect the saturation. But be careful, if you want to shoot beautiful reflections in the water, or metal-like highlights, do not use, it will eliminate these reflections, you will not get the image you imagine; but if you want to shoot the swimming fish in the water, or pool algae, or window displays, CPL is a good choice. CPL portraits will eliminate the highlights on the face, reducing the contrast, so that the face looks flat, depending on whether you need a special effect. cpl adjustment must be free to a hand, so it is best to use with the tripod and shutter cable together.
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