Average Reviews:
(More customer reviews)I got these filters for $4.95/per and I couldn't be happier. I have used B&W filters in the past, and while these are not quite in the same league, they are awfully close. Well-built, good multicoating, what more can you ask? If my Sigma 50mm macro is any indication, Sigma knows a thing or two about making glass. If you need something affordable and high quality, look no further. I see absolutely no difference between these and the more common Hoya S-HMC filters (which I also own).
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Digitally Optimised (DG) Filters EX DG filters benefit from Sigma's multi-layer lens coating, developed to counteract the highly reflective characteristic of image sensors. With older style filters, light would reflect off the image sensor, bounce off the lens and filter elements and re-enter the image sensor, creating a ghost image. The multi-layer coating dramatically reduces this effect. In addition to this, an optimum, neutral colour balance is ensured, increasing the white balance accuracy of the digital camera. Multi-coated UV Filter This filter perfectly eliminates the harmful effect of ultraviolet light. The multi-coated UV filter can be used with both colour and black-and-white film anddigital sensors. This is the most suitable filter for protective use and generalphotography.
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