UV filters are available for lenses of all sizes
UV filters are circular pieces of glass that cover cameras to block out UV rays caused by the sun. UV rays are made up of light that is shorter than 400 nanometers in wavelength. The rays are not visible to humans, however they can be picked up by cameras. Oftentimes, UV rays add unflattering and unwanted affects to photographs including clouded backgrounds and overly blue tints. These effects can be corrected with the use of UV filters. Additionally, UV filters are often used to protect camera lenses.
Protection
UV filters offer protection to camera lenses. Even though many cameras are built to stand some wear and tear, UV filters are the most cost effective way to protect the glass on camera lenses. A scratch on a lens can ruin a camera's autofocus capabilities because it will always try to focus on the scratch itself. UV filters can protect lenses from damage like this and if the UV filter gets damaged, it is far less expensive (as low as $10) to replace than a lens.
Haze and Glare Reduction
UV filters block out UV light from cameras which minimizes a haze effect caused by the sun. The haze effect makes picture backgrounds look washed out and less flattering. Though film cameras are more susceptible to picking up this unwanted haze affect, using a UV filter on a DSLR will correct any subtle haze effects caused by the rays.
High Altitude Shoots
According to Photo.net, UV rays increase with high altitudes. Photographs shot on mountains and from the air often have a blueish tint caused by the rays. Using a UV filter at a higher altitude can help reduce this unwanted blueish tint and save image quality.
Tags: camera lenses, caused rays, blueish tint, haze effect, this unwanted