Quote:
Originally Posted by iceman
For a $2000 camera and a $1000 lens, it's probably not a good idea to have a $20 piece of plastic in front of it all, so I'm happy to go for good quality (within reason).
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The trick with the "plastic" filters by Cokin or Lee is that they have the same refractive index as air. That's why they don't need coating and their exact shape/figure doesn't matter.
I agree though, with glass filters one shouldn't skimp. It pays to spend more on good (and easy to clean) coatings, good mechanical quality and a slim rim.
Since I don't use effect or grad filters myself I can't recommend any. With polarisers I've had good experiences with the B+W MRC series and the Nikon ones (which may not be available anymore).
Cheers
Steffen.