Lighting article

I found this article to be very interesting mainly because I know a decent amount about lighting. I work at a Sears Portrait Studio and we us a model similar to the umbrella and spotlight combination. I got very excited when I could recognize that style of lighting. The other thing I found interesting that I did not really know was the visible spectrum. The frequencies of visible light are something that I had been told in some lasses,  but it did not go into specific detail before. This article was very interesting.