The Canon EF 70-200mm f/2.8L IS USM lens is combining a very popular and very useful focal length range with excellent image quality. The Canon EF 70-200 lens combines professional build quality & superb auto focus performance. 

The Canon EF 70-200mm f/2.8L IS USM lens valuable 3-stop Image Stabilization – makes the 70-200 IS one of Canon’s most desired lenses. The Canon 70-200 lens is one of the most popular professional lenses.

The range from 70-200mm covers lots of applications from portrait work at 70mm to sports shooting at 200mm when you can get reasonably close to the action. In addition since the lens starts out fast at f2.8, you can add a 1.4x TC to make a 280mm f4 or a 2x TC to make a 400mm f5.6 if you need more reach.

Canon continues to set the bar for optics with the Canon EF 70-200 telephoto lens. Utilizing second generation image stabilization technology and a more refined auto focus system, this Canon EF 70-200 lens is built from the ground up for the professional photographer. An 8-blade circular aperture provides an out-of-focus image that pops and the zoom function responds in as little as 0.5 seconds. Additionally, a high resistance to dust and moisture means you don’t have to worry about your investment if you have to get your hands dirty on a shoot.

The Canon EF 70-200/2.8L IS USM uses Canon's ring USM motor which offers fast, silent focus plus full time manual focus override. The Image Stabilization (IS) has two modes. Mode 1 stabilizes in both the horizontal and vertical directions and so is best used when the lens is held steady. Mode 2 is used when panning the lens and turns off stabilization in the direction in which the lens is being panned. Canon specify that the IS is good for up to 3 stops of additional stability.

Canon EF 70-200mm f/2.8L IS USM key features:

• High speed AF performance - even faster than the EF 70-200 2.8L
• New high performance Image Stabilizer - effect equivalent to 3 stops compensation
• High level dust and moisture resistance - designed for use in harsh conditions
• 4 UD lenses for high image quality - reduces residual chromatic aberration

see the Canon EF 70-200/2.8L IS USM and full range here