What is UV filter?

UV filter is a substance that prevents the passage of ultraviolet (UV) light. In sunscrets, these chemicals and particles are combined in cream or spray to block the harmful light in achieving the skin and causing cell damage. In photography, the UV filter is a camera accessory placed on the lens to prevent the UV light from creating a blue shade up to the photos. The term UV filter may also apply to a water filtration system that produces rather than blocks, a large amount of UV light to kill microorganisms such as viruses or bacteria in water. UV rays cannot see people and are emitted by the sun and man -made black lights. On the way to the ground from the Sun, the rays are distracted and gases in the atmosphere are absorbed, so there is less UV light on the sea. There are more UV radiation at higher altitudes, for example at the top of the mountain. The amount of radiation that hits the ground differs from day to day and is usually higher between ten and two in the afternoon, regardless ofweather.

In the photo, the UV filter is a UV filter Accessories for a clear glass that fits through the lens of the UV -blocking camera and at the same time permits in all visible lights. This allows the photographer to capture the real colors in the picture without obtaining a blue shade. These filters are recommended especially at higher altitudes and at a time when the atmosphere comes more UV radiation. As a cheaper option, the UV filter is often used as a lens protective cover. This is particularly useful in taking pictures of rough circumstances, for example in the middle of the ocean spray or a sandstorm where there is a high risk of lens, which is much more expensive than a filter, dirty or scratched.

It is a highly debavshan, however, how much the filter protects the lens and whether it has more benefit or worsens the quality of the shot. Because there are a low amount of UV rays that meet the surface of the Earth, especially on the sea level, UV filterIt is often not necessary if at high altitude. Newer lenses also go through less UV light and the newer film is less sensitive to UV light, which further reduces the need for the filter. The new lenses are also more resistant to scratch, so the filter does not have to offer much more protection in most situations than the lens itself. Finally, the presence of the filter can reduce the contrast of the photograph and create a flare or a reflection of light from a glass of the filter.