Canon EF 70-300mm f/4-5.6 IS USM Lens for Canon EOS SLR Cameras

L2) CANON 70-300MM F/4-5.6 IS USM LE

Brand: Canon Model: 0345B002 Released on: 2009-11-30 Number of items: 1 Dimensions: 4.50" h x 4.70" w x 7.80" l, 1.39 pounds 70-300mm telephoto zoom lens with f/4-5.6 maximum aperture for Canon EOS SLR cameras 3-stop Image Stabilizer for reducing camera shake; ring-type ultra-sonic monitor (USM) Electro-magnetic diaphragm (EMD) helps create attractive background at large apertures Super Spectra lens coating and lens element shaping suppresses flare and ghosting Measures 3 inches in diameter and 5.6 inches long; weighs 22.2 ounces; 1-year warranty

Featuring the latest 3-stop Image Stabilizer for outstanding camera shake reduction, the EF 70-300mm f4-5.6 IS USM zoom lens also features super responsive autofocus. Replacing the popular EF 75-300mm f4-5.6 IS USM, the world's first interchangeable lens with Image Stabilizer (IS), the lens is expected to appeal to serious amateur nature and sports photographers looking to achieve outstanding results while shooting hand held. Image Stabilizer IS dramatically reduces image blur caused by camera shake. The EF 70-300mm f4-5.6 IS USM features Canon's latest 3-stop IS, a one-stop improvement over its predecessor. This allows shutter speeds up to three stops slower than would otherwise be possible, with no perceptible increase in image blur. Photographers normally shooting a 300mm frame handheld at 1/500 second can obtain the equivalent result with a shutter speed of just 1/60 second, vastly extending options in low-light conditions. 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. The EF 70-300mm f4-5.6 IS USM provides 2-mode IS for shooting immobile subjects. Mode 1 stabilizes the image along both the horizontal and vertical axes. For shooting while panning to follow a moving subject, Mode 2 turns off correction in the panned direction and prevents the effect of dragging the subject back through the frame. IS switches off automatically when the camera is mounted on a tripod, thus preventing feedback loops between the IS sensor and stabilizer motor vibrations. Superb autofocus The micro USM motor found in the EF 70-300mm f4-5.6 IS USM employs ultra-sonic frequency vibrations to drive auto focus with unrivalled speed and near-silent operation. Good holding torque stops the lens with precision and accuracy, the instant it arrives at the correct focus point and without overshoot. A high-speed CPU and optimised AF algorithm result in a significant increase of AF speed compared to that of its predecessor. A zoom ring locking mechanism is provided that locks the zoom at the wide-angle setting. This ensures that the lens is carried or stored in its most compact position, preventing possible damage caused by the lens extending and hitting obstacles when being carried mounted on a camera with a strap. Pleasing defocused background The EF 70-300mm f4-5.6 IS USM employs an electro-magnetic diaphragm (EMD) with a circular aperture. This helps create an attractive, even defocused background when isolating a subject at large apertures. Image quality By optimizing Super Spectra lens coatings and lens element shaping, Canon's engineers have been effective in suppressing flare and ghosting--more prone to occur with digital cameras due to reflection off the image sensor. By increasing light absorption, coatings reduce reflections off lens element surfaces to deliver crisp, undistorted images with natural color balance. Focal length translates to 112-480mm equivalent in 35mm film format when fitted to EOS 20D and EOS 350D cameras. The EOS system The EF 70-300mm f4-5.6 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 N and EOS 5D . 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. Accessories for the EF 70-300mm f4-5.6 IS USM include the lens hood ET-65B and the lens pouch LP1222. In keeping with Canon's Kyosei philosophy of living in harmony with the environment, the lens features only lead-free glass.

Most helpful customer reviews of 505 488 people found this review helpful. normal revision in simple terms, with shots of the sample by Gustavo Alfaro E. The short version: Pros: Optical quality is great, the speed is incredible, and is comparable to 70-200mm lens that people like this that blows out of the water (I think they are wrong - but let on that later) and Finally, the price can not be beaten. Buy it. Cons: No bell, works as a zoom and image quality in low light is reduced slightly. The long version: I am writing this in simple terms. I found several reviews, a number that goal, but all were in technical terms and leave you scratching your head a little. So if you're like me, maybe this comment will help. I bought this lens a couple of months US1Photo.com (check these guys. Regularly have significant sales and excellent customer service.) I use this lens with a Canon 40D. I take many types and styles of photos and I need a lens that would do the best work on several things and have a very good price (or right under $ 1,000) I looked through nine, with occasionally a third ( Tamron, Sigma, etc.) slow, and read comments and watched too many pictures too many to count, and spent four hours in a camera store to play with the lens before you decide to spend money and enjoy this objective. Overall, I spent about a week's time in research and testing, before I bought this lens. --- Edit: Well, Amazon does not allow me to put a link here. Here's how to find me. ~ ~ Go to Flickr then type "/" then "Photos" then "/" and the kind of family in "gman_five0" and should take you there. --- Test comment # 1: ~ The Canon EF 70-300mm f/4-5.6 IS USM does not track moving objects very well and at the end of the runway slower zoom. Gallery (Flickr page 2) What I found to be completely wrong. I use the lens at several sporting events and found that it was pretty good title, I each step, a base-runner of the first to second base, slide and recovery after the game to follow without losing once. To see what I mean look at my gallery on Flickr. Older children are not made with this lens or camera and actually took a few years ago. I will review the photos in question. Sure, there was a mile, Breaking Up That double play (please note, that was the date on which that the images were published re-laid passes). In addition, "Safe" was used instead of another picture taken at a time and used at an angle 70-200mm IS lens. These images I "AI Focus" and "H" have settings on my camera, monitoring the parameters and H for about 6 frames per second. Test Comment # 2: The ~ 200-300mm range is nice to be in theory, but a razor-sharp photos from 70-200mm at 200mm f/4L look better than a 300mm full-size photo cut off from this lens again, I took the wrong . Although I do not actually "full size" image of this comment when you come back with an email address that we can, a trip to one. Otherwise, take my word that I and several lenses in this stack is good though. (Ref Flickr gallery) The pictures were of the Dance Theater and Tashina all taken at 200-300mm focal length. Also, they are not full-size photo of pirates, but if you want e-mail, we can look at big profits. Test Comment # 3: IS engine is ~ loud, I do not know what these people talk, but when you call so loud ... On the other hand, I've heard (once), the sound of the actual engine, but if you do not hear it, you will not even notice it. Things I've found on the lens: if you spend some time with the lens will be one of your best friends is a great lens, especially for people with a budget (like me). Take the best pictures you can not just turn it on and go to the shooting. Take time to learn about the lens (changing the shutter speed and ISO.