Product Description

Canon EF 70-200mm f/4L IS USM lens offers the highest possible optical quality with no change in aperture over the full focal range of the lens. This allows photographers to set exposure at the widest aperture and zoom all the way through to 200mm without having to decrease shutter speed. Developed for use with a Canon SLR camera, this autofocus telephoto zoom lens offers optimized use with the Canon EOS series digital cameras. Of particular note, Canon has introduced an image stabilizer (IS) that adjusts to meet the demands of professional photography.
IS reduces dramatically the image blur caused by camera shake. Gyro sensors detect unwanted vibrations, triggering the corresponding movement of a correcting lens group perpendicular to the optical axis. This alters the light path, returning the image to its correct position on the sensor or film plane. For shooting immobile subjects, Mode 1 corrects for movement in the image along both the horizontal and vertical axes. For shooting while panning horizontally to follow a moving subject, Mode 2 turns off vertical correction and prevents the effect of dragging the subject back through the frame.
The lens' Ring-type USM employs ultra-sonic frequency vibrations to drive auto focus with unrivalled speed and near-silent operation. A powerful CPU and improved AF algorithm contribute to speed performance. The EF 70-200mm f/4L IS USM includes distance metering information, providing compatibility with the E-TTL II flash system of late model cameras such as the EOS-1D Mark II, EOS-1Ds Mark II, EOS 5D and EOS 400D. When used in conjunction with Canon's range of EX Speedlite flash units, the lens passes distance information to the flash algorithm for markedly improved flash exposure metering. Includes Lens hood and soft pouch

Product Details

• Brand: Canon
• Model: 1258B002
• Released on: 2006-10-23
• Dimensions: 5.50" h x 5.50" w x 9.80" l, 1.70 pounds

Features

• 70-200mm telephoto zoom lens with f/4 maximum aperture for Canon digital SLR cameras
• Fluorite UD lens elements produce excellent optical performance in resolution and contrast
• Ring-type ultra-sonic monitor (USM) for quick and quiet autofocusing; lightweight construction
• Image Stabilizer provides up to 4 stops of shake correction; water- and dust-proof construction
• Measures 3 inches in diameter and 6.8 inches long; weighs 26.8 ounces; 1-year warranty

Amazon.com Product Description
Capture the far-off action of fast-paced sports or zoom in for an intimate portrait with the Canon EF 70-200mm telephoto zoom lens. The L-series lens offers an Image Stabilizer that provides up to four stops of shake correction--a first for Canon IS lenses. The use of fluorite UD lens elements, meanwhile, produces an excellent optical performance in terms of resolution and contrast. Add in a sturdy housing with water- and dust-proof construction and you have a lens that's both portable and high performing. Other details include an f/4 maximum aperture, a ring-type ultra-sonic monitor (USM) that enables quick and quiet autofocusing, compatibility with circular polarizing filters, and a lightweight body. The lens carries a one-year warranty.

• Focal length: 70-200mm
• Maximum aperture: f/4
• Lens construction: 20 elements in 15 groups
• Diagonal angle of view: 34 to 12 degrees (with full-frame cameras)
• Focus adjustment: AF with full-time manual focus
• Closest focusing distance: 3.94 feet
• Zoom system: 7-group helical zoom (72-degree rotational angle)
• Filter size: 67mm
• Dimensions: 3 inches in diameter, 6.8 inches long
• Weight: 26.8 ounces

From the Manufacturer
High-performance, L-series telephoto zoom lens combining light weight and compactness with an f4 maximum aperture. Inner focusing and the ring USM enable quick and quiet autofocusing. Also, a circular polarizing filter can be attached and used without difficulty because the front lens element does not rotate during focusing. The tripod collar (sold separately) is the same one used with the EF 300mm f4L USM.

Customer Reviews

My favorite lens
I highly recommend this lens. It surprised me when it arrived that it's so small and light (I'm comparing to the EF 24-70 f2.8 L and the EF 300 f4 L). It internally focuses so there is no change in length throughout the zoom range. It's extremely sharp wide open - I've used it both for close-ups with an extension tube and for more distant shots. Got my first decent close-up of a hummingbird. The IS works so well it's hard to distinguish from shots on the tripod - it really does give you an extra stop or two hand-holding the camera. This is pretty much state of the art in lens design. If you're looking for a lens in this range, go for it! You won't be disappointed.

Canon 70-200mm f4 L IS USM Lens
The Canon 70-200mm f4 L IS USM is a great lens. It's pricey but it provides great quality images. The lens is part of Canon's L line up which is a better built product.

The lens is light-weight and provides a nice zoom lentgh to get you much closer to the subject you are shooting. The IS works very well. With the greatest aperture value of f4 it isn't the best in low light, but that is not one of my concerns, it shoots great outdoors or indoors with enough light. The IS helps out some here also. It's the biggest lens I have owned but it still fits nice in a camera bag and isn't too heavy to carry around with other lenses.

The only thing I wish this lens came with was a tripod mount. I mounted the camera and lens on a tripod connected to the camera however and it held up fine. It is light enough it will not bow the whole set up down, but I wouldn't suggest long use like this. I highly recommend this lens for any Canon DSLR.

Great Lens
I spent a lot of time doing research trying to decide which zoom lens to get and decided to spend the extra money for this one and the results have been well worth it, very fast,accurate auto-focus, IS works very well, Image quality is superb. This has been regarded as one of Canon's best lenses. I'm using it with my 30D