On Sat, 17 Aug 2002 01:28:48 GMT, Rudy Garcia wrote:

>In article ,
> stephen@bokonon.stevedunn.ca (Stephen M. Dunn) wrote:
>
>> In article "Paul Saunders"
>> writes:
>> $Anyone ever thought of using a UV filter to filter ultraviolet light?
>>
>> HERETIC!
>>
>> One other thing to keep in mind - a lot of UV filters, particularly
>> those marketed as "UV Protector" filters, let a lot of UV pass through.
>> From the UV filter page of a Tiffen filter brochure:
>>
>> UV Protector: "Provides basic reduction of UV light"
>> Sky 1-A: "Absorbs almost half of UV light"
>> Haze-1: "[absorbs] almost three quarters of UV light"
>> Haze 2A: "Absorbs virtually all UV light"
>> UV 17: "Absorbs slightly less UV light than Haze 2A"

>Here is an interesting question:
>
>Does the amount of UV protection change between uncoated and multicoated
>UV filters?

Unlikely - but for the original poster, most multi-element
lenses themselves absorb most of the UV entering them...