Canon EF 70-300mm Image Stabilizing Telephoto Lens
http://www.slrtoday.com/articles/84/1/Canon-EF-70-300mm-Image-Stabilizing-Telephoto-Lens/Page1.html
By SLR Today
Published on 10/20/2006
Replacing the best-selling Canon EF 75-300mm f4-5.6 telephoto lens, the Canon EF 70-300mm zoom lens sports a 3-stop image stabilizer capable of dramatically reducing blurring due to camera shake. Several gyro sensors throughout the lens detect camera shake vibrations and rely this information to a correcting lens group. The light path is then altered to accurately position the image on the sensor.
The f4-5.6 IS USM zoom lens is also equipped with a very responsive ultra-sonic frequency vibration autofocus, designed with the active nature and sports photographer in mind. Impressive holding torque provides excellent control over lens movement so that the correct focus is used every time. The AF is also speedy thanks to a new high-speed processor and a retooled AF algorithm.
Replacing
the best-selling Canon EF 75-300mm f4-5.6 telephoto lens, the Canon EF
70-300mm zoom lens sports a 3-stop image stabilizer capable of
dramatically reducing blurring due to camera shake. Several gyro
sensors throughout the lens detect camera shake vibrations and rely
this information to a correcting lens group. The light path is then
altered to accurately position the image on the sensor.
The f4-5.6 IS USM zoom lens is also equipped with a very responsive ultra-sonic frequency vibration autofocus, designed with the active nature and sports photographer in mind. Impressive holding torque provides excellent control over lens movement so that the correct focus is used every time. The AF is also speedy thanks to a new high-speed processor and a retooled AF algorithm.
Image quality is aided by a Super Spectra lens coating and lens element shaping that cuts down on flare and ghosting. The lens coating absorbs light and signficantly reduces light reflection off of lens components. This results in brighter, sharper, and more color-accurate photos.
Key Features
Replacing the best-selling Canon EF 75-300mm f4-5.6 telephoto lens, the Canon EF 70-300mm zoom lens sports a 3-stop image stabilizer capable of dramatically reducing blurring due to camera shake. Several gyro sensors throughout the lens detect camera shake vibrations and rely this information to a correcting lens group. The light path is then altered to accurately position the image on the sensor. The f4-5.6 IS USM zoom lens is also equipped with a very responsive ultra-sonic frequency vibration autofocus, designed with the active nature and sports photographer in mind. Impressive holding torque provides excellent control over lens movement so that the correct focus is used every time. The AF is also speedy thanks to a new high-speed processor and a retooled AF algorithm.
Canon EF 70-300mm f/4-5.6 IS USM Telephoto Zoom Lens
Replacing
the best-selling Canon EF 75-300mm f4-5.6 telephoto lens, the Canon EF
70-300mm zoom lens sports a 3-stop image stabilizer capable of
dramatically reducing blurring due to camera shake. Several gyro
sensors throughout the lens detect camera shake vibrations and rely
this information to a correcting lens group. The light path is then
altered to accurately position the image on the sensor. The f4-5.6 IS USM zoom lens is also equipped with a very responsive ultra-sonic frequency vibration autofocus, designed with the active nature and sports photographer in mind. Impressive holding torque provides excellent control over lens movement so that the correct focus is used every time. The AF is also speedy thanks to a new high-speed processor and a retooled AF algorithm.
Image quality is aided by a Super Spectra lens coating and lens element shaping that cuts down on flare and ghosting. The lens coating absorbs light and signficantly reduces light reflection off of lens components. This results in brighter, sharper, and more color-accurate photos.
Key Features
- 70-300mm focal length
- EF mount; telephoto zoom lens
- 3-stop Image Stabilizer for outstanding camera shake reduction
- Electro-magnetic diaphragm (EMD) helps create an attractive, even defocused background at large apertures
- Ring-type UltraSonic Motor (USM)
- Focal length and maximum aperture: 70-300mm f4-5.6
- Lens construction: 15 elements in 10 groups
- Diagonal angle of view: 84 degrees to 23 degrees 20 seconds (with full-frame camera)
- Focus adjustment: Front-focusing method with helicoid ring drive
- Closest focusing distance: 4.9 feet/1.5 meter
- Zoom system: 6-group helical zoom (rotational angle: 84 degrees)
- Filter size: 58mm
- Maximum diameter x length: 3.0 x 5.6 inches/76.5 x 142.8 millimeters
- Weight: 22.2 ounces/630 grams (lens only)