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Title: Nice UV Filter
Review: Generally I don't use UV filters on my lenses. Why degrade an excellent L lens? I bought this one to go on my Canon 100mm F/2.8 L IS macro lens for a trip to Ecuador. Since I would be running around the jungle without a lens cap on I wanted this filter as a layer of protection. B+W always makes excellent filters using Schott optical glass. I am an optical engineer and this will have a much better wavefront than cheaper filters if tested on an interferometer.
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