Bill_de wrote:
In answer to your question ... From B&H
"UV filters, also referred to as Haze filters, are designed to cut through the effects of atmospheric haze, moisture and other forms of airborne pollutants, each of which contributes to image degradation. UV/Haze filters are available in varying strengths. If you plan on photographing near large bodies of open water, at higher altitudes, in snow or other conditions that magnify the intensity of ambient ultra-violet light, you should definitely consider a stronger level of UV filtration (UV-410, UV-415, UV-420, UV-Haze 2A, UV-Haze 2B, UV-Haze 2C and UV-Haze 2E). Depending on the strength of the UV coatings, UV filters appear clear, or in the case of heavier UV coatings, have a warm, amber-like appearance and require anywhere from zero to about a half stop of exposure compensation."
http://www.bhphotovideo.com/explora/photography/buying-guide/guide-filters-lenses
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In answer to your question ... From B&H br br... (
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Interesting information on filters.