And while ago I took a Photoshop course, and the lecturer had been into photography since before I was born. The course itself was useful, but my favorite part was listening to him talk about the history and technology that impacted photography, like the development of colour film or aspherical lenses... I also found the article on lens genealogy posted on lensrentals blogs fascinating. The history surrounding tessars, sonnars and double gauss... No I am NOT joking... I am a science geek, and I like obsessing over gear specs and reviews too. Does anyone know of a book or books that gets into this sort of subject matter? I'm kind of thinking along the lines of Bill Bryson's Short History of Nearly Everything but for photographers.