The Canon 1200mm f/5.6 L lens is a legendary optic that B&H calls “The Mother of all Telephotos“. It’s a 36 pound behemoth that costs $120,000 if you can find one for sale — only a handful of them were made at a rate of 2 per year (delivery time was 18 months). When coupled with a crop factor body (e.g. the Canon 7D) and a 2x extender, the lens is the equivalent of a 3840mm f/11. In the above video, Bryan Carnathan of The Digital Picture gives us a glimpse of the lens in action.