Canon EF 17–40mm f/4L USM Ultra-Wide Zoom LensThis ultra-wide angle zoom lens is ideal for capturing mountain vistas, group portraits cityscapes and interiors. Weighing just over a pound, it travels easily, whether you plan to take it on a hike or a trans-Atlantic trip. Experience exceptional color and clarity when you pair this lens with your Canon EOS DSLR camera.
As a photographer and photography teacher, I consider every photography purchase a long-term investment, so I only buy Canon's L series lenses. Shooting landscapes in the Southwest convinced me that I needed the 17-40, and it has given me the results I want when paired with a Canon 5D Mark 2 body. I can get great panoramic shots without much barrel distortion, and the image clarity is top quality.
What's great about it: Great wide angle; L series lens give crystal clear images.