This UV Filter blocks the invisible UV component of light from the sky, which can cause blur and to which many color films react with a blue cast. These filters should be called UV-Blocking Filters, because there are filters for technical applications that pass UV radiation and block all the other wavelengths. Nevertheless, the short term "UV Filter" has become established among photographers.
UV Filters are ideal for photography in high altitudes (in the mountains), by the sea and in regions with very clean air. The pictures gain brilliance and disturbing blue casts are avoided. Because the glass is colorless, color rendition is not altered, aside from the elimination of the unwanted blue cast, and no increase in exposure is required. That makes a UV Filter very suitable as protection of the front element of the taking lens against dust, flying sand, sea water spray and the like, and it can be kept on the lens at all times. It is recommended for analog color and black-and-white as well as digital photography.
The MRC coating is first and foremost a broadband anti-reflection coating. This means that its
reflection-reducing effect, which is thus also a transmission-increasing effect, i.e. one which suppresses
scattered light and ghost images and transmits more light, has a broadband action over the full spectrum. In contrast, the (almost always blue) single-layer coating only has a high effect in the medium
wavelength range around yellow and yellow-green where the eye is most sensitive to light, while
its effect is greatly reduced toward the blue-violet and purple-red end regions of the visible spectrum.
With the MRC coating, this blue, violet and red to deep-red light cannot produce any contrast-reducing scattered light, spotty reflections or ghost images.
Bonus 5 Pc. Cleaning Kit