Sigma has announced the launch of its EX DG range of filters. The new filters are optimised for digital SLRs and benefit from a super multi-layer lens coating developed to counteract the reflective characteristics of digital image sensors. The filters claim to reduce both flare and ghosting, while black-rimmed glass helps to eliminate unnecessary internal reflections.
The Sigma EX DG range includes UV filters, which reduce ultraviolet light and protect the lens during shooting, and Circular Polarising (CP) filters that eliminate reflections from subjects such as glass and water. The CP filters, with the exception of the 86mm, 95mm and 105mm, are encased within an ultra-thin metal ring that aims to minimise vignetting with wide-angle lenses. Prices range from £17.99 to £199.99; check out the full range at www.sigma-imaging-uk.com