This video is kind of long, but I really enjoyed it. It gets more and more interesting as it goes. In several cases they use a pair of lasers and some mist to let you see the light beam paths through the lenses to explain how they work. The zoom lens scenario, shown in the poster frame here, is one of the best ones. I currently work in video technology and was formerly an astronomer, so this hits my interests from two directions. 🙂
Originally shared by Filmmaker IQ
Get ready to be the star at the next cocktail party because you watched the “History and Science of Lenses” and know what a Double Gauss lens is!