Canon EF 70–200mm lens
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The EF 70-200mm lens is a telephoto zoom lens made by Canon Inc. The lens has an EF mount to work with the EOS line of cameras.
The lens comes in five different versions, all of which have fixed maximum aperture at all focal lengths and are L-series lenses.
The f/4 non-IS version, the cheapest L-series lens that Canon makes, is popular among weight-sensitive landscape photographers and hobbyists who want L lens quality without spending thousands of dollars. The f/2.8 versions are popular among event photographers and photojournalists; some portrait photographers also prefer this lens. The non-IS f/2.8 version was released in 1995 and replaced the venerable EF 80-200mm f/2.8L lens. The IS version lenses use circular 8-bladed diaphragms which maintain a nearly circular aperture when stopped down by up to two stops. The f/2.8 and f/4.0 image-stabilized versions also feature weather sealing (resistance to dust and water) when mated to a weather sealed camera to such as the Canon EOS 1D-series bodies.[1][2] Weather sealed Canon products are not completely sealed from the environment, they are merely more resistant than non-sealed versions. These lenses are compatible with the Canon Extender EF teleconverters.
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[edit] Crop factor
When used with a Canon APS-C (1.6x crop) DSLR camera or APS-H (1.3x crop), the field of view of this lens is equivalent to a 112-320mm on an APS-C sensor, or 91-260mm on an APS-H sensor. This is due to the crop factor inherent with APS-C or APS-H (crop) sensor digital SLR cameras.
[edit] Switches
The most frequently pointed-out problem with this lens is the placement of the IS and AF buttons, that makes them prone to accidental flipping during hand-held shooting. Some photographers solve this simply by covering the buttons with a piece of gaffer tape. In recognition of this issue, the most recent of these lenses (the f/4L IS USM model and recent f/2.8L IS USM lenses) uses switches designed to reduce the incidence of accidental switch activation [1].
[edit] Specifications
| Attribute | f/2.8L IS USM II | f/2.8L IS USM | f/2.8L USM | f/4L IS USM | f/4L USM |
|---|---|---|---|---|---|
| Image |  |
 |
 |
 |
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| Image stabilizer |  Yes; 3rd generation (4 stops) |
Yes; 2nd generation (3 stops) |
 No |
Yes; 3rd generation (4 stops) |
No |
| Environmental Sealing | Yes |
No |
Yes |
No |
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| Ultrasonic Motor | Yes |
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| L-series | Yes |
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| Diffractive Optics | No |
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| Macro | No |
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| Maximum aperture | f/2.8 | f/4 | |||
| Minimum aperture | f/32 | ||||
| Weight | 1,490 g (3.3 lb) | 1,470 g (3.2 lb) | 1,310 g (2.9 lb) | 760 g (1.7 lb) | 705 g (1.55 lb) |
| Maximum diameter | 89 mm (3.5 in) | 86 mm (3.4 in) | 85 mm (3.3 in) | 76 mm (3.0 in) | |
| Length | 197 mm (7.8 in) | 197 mm (7.8 in) | 194 mm (7.6 in) | 172 mm (6.8 in) | |
| Filter diameter | 77 mm | 67 mm | |||
| Lens hood | Tulip-shaped (ET-86) | Tulip-shaped (ET-83II) | Cylindrical (ET-74) | ||
| Horizontal viewing angle | 29° – 10° | ||||
| Vertical viewing angle | 19°30′ – 7° | ||||
| Diagonal viewing angle | 34° – 12° | ||||
| Groups/elements | 19/23 | 18/23 | 15/18 | 15/20 | 13/16 |
| # of diaphragm blades | 8 | ||||
| Closest focusing distance | 1.2 m (3.9 ft) | 1.4 m (4.6 ft) | 1.5 m (4.9 ft) | 1.2 m (3.9 ft) | |
| Release date | April 2010 | September 2001 | March 1995 | November 2006 | September 1999 |
| MSRP $ | $2,499.00 | $1,999.00 | $1,449.00 | $1,349.00 | $710.00 |
[edit] Gallery
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The f/2.8L lens with lens hood
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The f/2.8L lens
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The f/4L lens without lens hood
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The f/4L lens on a Canon Digital Rebel
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Additional pins on the 70-200mm f/4 L EF mount
[edit] See also
- Canon lenses
- Canon EF 16-35mm lens, with the same maximum aperture of 2.8. Serves as a ultra wide-angle to complement the 70-200mm. This combination is commonly used by Photojournalists.
- Canon EF-S 17–55mm lens, with the same maximum aperture of 2.8. Compatible only with Canon APS-C bodies (1.6x crop factor). General-purpose zoom to complement the 70-200mm; this combination is used by some owners of higher-end APS-C bodies.
- Canon EF 24-70mm lens, with the same maximum aperture of 2.8. Serves as a general-purpose lens to complement the 70-200mm. This combination is commonly used by wedding photographers.
- Third party lenses
[edit] References
- ^ Carnathan, Bryan. "Canon EF 70-200mm f/2.8 L USM Lens Review". The-Digital-Picture.com. http://www.the-digital-picture.com/Reviews/Canon-EF-70-200mm-f-2.8-L-USM-Lens-Review.aspx. Retrieved September 10, 2011. "Unlike its IS sibling, the Canon EF 70-200mm f/2.8 L USM Lens is not fully weather-sealed - Extra caution will need to be taken in wet conditions."
- ^ Carnathan, Bryan. "Canon EF 70-200mm f/4.0 L IS USM Lens Review". The-Digital-Picture.com. http://www.the-digital-picture.com/Reviews/Canon-EF-70-200mm-f-4.0-L-IS-USM-Lens-Review.aspx. Retrieved September 10, 2011. "The Canon EF 70-200mm f/4.0 L IS USM Lens is the second lens in the Canon 70-200mm L lens family to sport weather sealing (the f/2.8 IS is the first)."
[edit] External links
- Canon EF 70-200mm f/2.8L IS USM II
- Canon EF 70-200mm f/2.8L IS USM
- Canon EF 70-200mm f/2.8L USM
- Canon EF 70-200mm f/4L IS USM
- Canon EF 70-200mm f/4L USM
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