Hoya PRO1 Digital, 67 mm

'Filters' are circular pieces of glass which fit onto the lens of an SLR camera. A filter can serve many purposes, and I personally use them for two reasons. Firstly, and perhaps most importantly, they protect whatever they are fitted onto. If you're using a £1000 lens (not that i've got one of those), then you don't want to risk scratching the glass at the front and ruining the product. Secondly, I specifically use a 'UV' filter (like the Hoya Pro1 Digital which I am reviewing here), to absorb the ultraviolet rays which often make outdoor photos look hazy. This particular filter costs £28 from Amazon, but I order them from Hong Kong for ...  Read the complete review