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We thought a good follow-up to the last post about lens colours would be an overview on photochromic lenses that change tint depending on the weather or surroundings. There are some proprietary brand names like Transitions, Reactolite and Reactions but the generic term for this type of lens (and the one we use) is ‘Photochromic’. Most of the sports eyewear brands now have photochromic sunglasses in their range. In the early days only glass (or ‘mineral’) lenses could be made to darken when expo …

One of the questions we are often asked at Shows is what the different lens colours are for – what do they do. So here’s a quick guide.Grey - the most popular lens colour. It reduces all light equally, does not increase contrast or alter the colour of objects.Smoke - the lens colour mostly used as the base colour when a mirror finish is applied to the lens. Similar to grey but can have a brown or blue hue.Amber and Brown - popular colours that increase contrast (field of vision will appear sharp …

Early in the morning or late in the evening when we’re driving to and from work the winter sun will be sitting low in the sky. If you turn the corner and the low sun is directly ahead of you can be caught off-guard and temporally blinded. Even the car’s sun visor may not help so this can be dangerous if you're unable to see what’s in front of you. This can be made worse if the road is wet which adds to the glare by reflecting of the road surface. So why not make sure you keep a pair of polarised …