Canon's L series lenses are legendary, known for rugged construction, reliable performance, and class-leading image quality. With all that comes high prices, however. Nonetheless, the L series has been around for over 30 years, and that means there are some gems from past years that cost a fraction of what the most current models do. This great video review takes a look at one such lens, the EF 20-35mm f/2.8L.