Light bulb technology has made great strides in recent decades, much to the benefit of the average consumer. Not only are they more cost-effective and longer-lasting in most cases than they were ...

Most video cameras flash a four or five digit number in the viewfinder whenever you white-balance or change filters. This number, often followed by the letter "K," represents the camera's evaluation ...

Light is light, right? Not exactly. The light that comes from the overhead fluorescents at your office is probably nothing like the light that pours from your favorite chandelier at home or that of ...

We have all suffered from obvious colour casts in our slides caused by the ambient light not being 'neutral'. The problem is easy to cure using filters of various colours, but its difficult to know ...