In article , us015494@mindspring.com says...
[...]
>the most common filters sold are the skylight, the UV and the polarizer.
>Then come some warming and cooling filters for color balancing and then
>the colored filters for B&W tonal balancing.
>
>Special filters like stars, lenticulars, soft focus, diffusion, splits,
>pops are an extremely small segment of the total market.
>
>Most filters are designed to be unobtrusive when the final shot is viewed.
>They can be over used and then become obvious but almost every scene can
>be photographed with a filter to improve the scene if for no other reason
>then to remove the UV haze that is so common or to warm up the blue common
>in shadows.

I guess I see too many gauzy portraits, too many landscapes obviously "adjusted" with split-tone and graduated filters, and far too many
photos of all types with colors rendered artificial-looking by
polarizers... BTW, most lenses absorb UV, rendering the UV-absorption
of a UV filter redundant - and films can be selected that do not render
shadows blue, removing the need to use a skylight filter (which warms
all of the colors in the photo, not just the shadows...).
Hope This Helps