To go bare lens or not to go bare lens? That’s the question that many photographers ask when buying a new lens, with many insisting that a UV filter wards off scratches while others say glass that ...

Sigma has revealed a range of lens filters which use a new type of crystallized glass to offer increased protection, while also being thinner and lighter than previous models. The WR Ceramic Protector ...

Photography maybe all digital these days, but there's one legacy from the days of film that persists for owners of digital SLRs. Glass filters for creating special effects or simply just protecting ...

Q–I have seen filters made of plastic as well as filters made of glass. Are the plastic filters as good as the glass ones? A–In optical terms, they are perfectly satisfactory for general purposes but ...

If you keep a filter on your lens at all times for protection, you’re about to be jealous of Hoya’s new ultra-hard HD2 glass filters. Using their exclusive hardened optical glass technology, the 1mm ...

Knight Optical – the leading supplier of on-spec, metrology-tested optical components – has a wide-ranging portfolio of Colour Glass Filters available from stock or as made-to-order components.