Canon has a long history of producing some of the most interesting and extreme lens designs out there, and they can be a blast to look back on and even use today if you can track them down. This fun video takes a look at the company's seven most extreme designs, ranging from an insane 5200mm f/14 lens from the 1960s to one of the most useful options on the market today.
[ Read More ](Originally posted by Alex Cooke)