This ultraviolet filter is probably the least interesting of the bunch, simply because people don’t need them much these days. Once upon a time, certain film stocks were vulnerable to UV exposure, and one of these filters would improve image quality. That’s not the case with digital sensors. However, this filter does come in handy with big mountain landscapes. UV radiation bouncing around in the atmosphere causes faraway scenery to appear hazy or cloudy. This filter cuts through that haze and produces a clearer photo.
Even though its applications today are limited, many people still keep a UV filter on their lenses because it can stop dust and scratches from reaching the more expensive glass behind it. It’s also perfectly clear, so won’t cause any color shifts in the image. I decided to use this filter to test the manufacturer’s claims about water and stain resistance.
Talon Homer/SlashGearFirst, I held it under the sink for several seconds. The water ran off quickly, with only a few tiny droplets sticking around. After air drying, some residue was left over, but a couple of wipes with a microfiber cloth got it to look crystal clear again. This chemical coating also makes fingerprints very easy to wipe off, which is important to someone as clumsy as me.
Talon Homer/SlashGearTheir most outlandish claim is that you can write directly on the glass with a permanent marker, and simply wipe it right off. I eagerly tested this for myself. Sure enough, it worked!
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