I'm looking at a Canon 17-40 mm wide angle lens, and I don't understand why anyone would buy it. EFS18-55mm II is the standard Canon 18-55 mm lens that DSLRs come with, and it seems almost as ...
I am trying to create a DIY wide angle webcam with the goal of maximizing my horizontal and vertical fov. I'm thinking that I need to use fisheye filters and then defish the video afterwards. Is this ...