SLR camera lens should always hang UV mirror or polarizer?
The two filters are functionally different from the one that is the underlying protective filter (UV mirror) and the other is a functional filter (such as a polarizer, a center mirror). The polarizer is gray and opaque ; Uv mirror is colorless and transparent; function that: uv mirror is the main function is to absorb the wavelength of 380 micro-millimeter of ultraviolet light, and the lens to play a protective effect such as dust and water.
The polarizer function is different, it is mainly used to eliminate or weaken the non-metallic subject surface reflection, thus eliminating or reducing the spot, is shooting water, glass and other strong reflective object ideal filter. As part of the light is filtered, so the use of polarizers will reduce the 1-2 into the amount of light. Uv mirror is long used in the lens, the lens play a protective role. If it is a long time to use, or the pursuit of transparent, high-quality photos or a separate use of good, because more than a layer as one layer.
Very white a problem: UV mirror: also known as UV filter, that is UltraViolet. Usually colorless and transparent, but some because of the addition of anti-reflective film relationship, in some angles will show purple or purple. Polarizer: also known as polarizer is the use of polarized light characteristics, polarized lenses to non-metallic objects, water and other reflective filter to eliminate the lens. Can eliminate the reflective and make the color more vivid, some movies and even the whole film with polarizer, so that the screen has more rich colors
