#1. "RE: UV Haze 2" | In response to Reply # 0benveniste Nikonian since 25th Nov 2002Fri 01-Feb-13 11:43 AM
It depends on the brand, but in general I'd expect a "Haze 2" filter to block more UV light than a "Haze 1." This extra function comes at the cost of blocking slightly more visible light in the purple and blue spectrum.
For example, at one time Nikon made both L37 and L39 UV filters. Here are the transmission curves for the analogous Hoya materials:
You can see that the L39 material blocks noticeably more light in the visible 400-500nm range. As a result, such filters weren't optimal for color photography. Nikon used to recommend using their L39 filter for mountain or beach scenes shot with conventional black and white film.
For the vast majority of photographers, modern films and digital sensors, lens coatings, and optical cements eliminate the need for UV filters at all, let alone ones of different strength. Unless you're shooting conventional B+W film or tungsten-balanced film through 25+ year old lenses (and I occasionally do), I'd suggest consigning the Haze 2 filter to the "junk drawer" of history.
"There is no real magic in photography, just the sloppy intersection of physics and art." — Kirk Tuck
#2. " RE: UV Haze 2" | In response to Reply # 1srd1941 Nikonian since 05th Feb 2012Sat 02-Feb-13 01:49 AM
Thanks for the answer. It was bought by mistake and I refused to pay re-stocking fees for returning an unopened item so it's been in the junk drawer for the last two years. I thought maybe it would be usable on a real bright day to block some light but I guess not.
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