danmitchell
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 p.1 #5 · Which filters for the 17-40L lens? | |
+1 on "just one, a circular polarizer."
The CP filter has quite a few uses - here's a Readers Digest version:
1. Can be used to, for example, darken skies and increase contrast with clouds in landscapes.
2. Can be used to reduce reflections - on glass, water, foliage, etc.
3. Can function as a quick and dirty neutral density filter in some situations in which you want to increase exposure time or use a larger aperture.
If you are into long exposures already and you have a specific need for it, some sort of neutral density filter could also be useful - but don't rush out and buy one unless you understand why.
Dan
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