Canon has announced the coming availability of the RF400mm f/2.8L IS USM and Canon RF600mm f/4L IS USM, which it admits are optically identical to the original EF designs. The lenses look pretty much identical, save for what appears to be a bright silver built-in RF adapter.
If you're a sports or wildlife photographer, you may be giving the Sony a9 a long and eager look. But so far, telephoto options are limited, and there's nothing available over 200mm from Sony (yet). In this video, photographer Dan Watson mounts the Canon 300mm and 400mm lenses to test the autofocus capabilities.
Now here's a neat use of Canon's lenses: the University of Toronto owns one of the smallest professional astronomical telescopes in the world that uses an array of photographic camera lenses instead of a single lens. Called the Dragonfly Telephoto Array, it uses ten ordinary Canon 400mm f/2.8L IS II lenses that cost $9,999 each. That's $100,000 in photo gear.
Reuters photographer Murad Sezer was shooting at an uber-important soccer final in Turkey …