Polarizer for 20 mm 1.7
Or a Haze or UV filter? Necessary? Highly improve the picture? Better contrast? Cheap enough to use in place of a lens cap? Cheap ones on Ebay any good or do they drastically reduce sharpness? What's a good brand if I did buy one?
Thanks again you guys are great!-- hide signature --
I wouldn't bother with a haze or uv. if you need a polarizing filter then a polarizer is necessary. So if you want to cut reflections or saturate colors (which is really just cutting reflections) a polarizer is a must. If you want a ND filter a polarizer is a decent substitute.
Marumi super dhg are nice and cheap. B+W MRC are nicer and expensive. (But a brass ring beats an aluminum one.)
Cheap filters have cheap coatings. Cheap coatings lead to veiling flare which reduces contrast.
I'd get a lens hood before I bought a filter.
This never would have happened if Tedolf was still alive.