Английская Википедия:Canon EF 70–200mm lens
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The EF 70–200mm lenses are a group of telephoto zoom full-frame lenses made by Canon. The lenses have an EF mount to work with the EOS line of cameras.
The lens comes in seven different versions, all of which have fixed maximum aperture at all focal lengths, and are L-series lenses.
- f/4L USM[1][2]
- f/4L IS USM[3][4][5]
- f/4L IS II USM[6]
- f/2.8L USM[7][8]
- f/2.8L IS USM
- f/2.8L IS II USM[9][10]
- f/2.8L IS III USM[11]
The latest iterations of both the f/4 and the f/2.8 variants were announced on 7 June 2018. The f/4 is currently under production and the original MSRP was increased from US$1,299 to US$1,499. In March 2021, it was reported that Canon had decided to discontinue the lens.
Common fields of application
The f/4 USM 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 where the lens's lower light capabilities are required. Some portrait photographers also prefer this lens because the fast aperture produces more background blur and bokeh.
The non-IS f/2.8 version was released in 1995 and replaced the EF 80–200mm f/2.8L. The lenses use nine- or eight-bladed, circular diaphragms which maintain a nearly circular aperture when stopped down. The f/2.8 and f/4.0 image-stabilized versions also feature weather sealing when mated to a weather-sealed camera to such as the Canon EOS 1D-series bodies.[12][13] These lenses are compatible with the Canon Extender EF teleconverters. Due to its internal zooming mechanism, the lens does not creep or zoom when pointed downward.
35-mm-equivalent focal lengths on cameras with smaller sensors
When used with a Canon APS-C (1.6x crop) DSLR camera or APS-H (1.3x crop), the 35-mm-equivalent focal lengths of these lenses are 112–320mm on an APS-C sensor and 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.
Switches
A frequently pointed-out problem with this lens is the placement of the IS and AF switches, which make them prone to accidental flipping during hand-held shooting. Some photographers solve this by covering the buttons with a piece of gaffer tape. In recognition of this issue, starting with the f/4L IS USM model and f/2.8L IS II USM lens, Canon uses switches designed to reduce the incidence of accidental switch activation.[14]
Specifications
| Attribute | f/2.8L IS III USM | f/2.8L IS II USM | f/2.8L IS USM | f/2.8L USM | f/4L IS II USM | f/4L IS USM | f/4L USM |
|---|---|---|---|---|---|---|---|
| Image | Файл:Canon EF 70-200mm f2.8L IS III USM.jpg | Файл:Canon EF 70-200mm f2.8L IS II USM, 2013 November - 2.jpg | Файл:Canon EF 70-200mm f2.8L IS USM.jpg | Файл:Canon EF 70-200mm.jpg | Файл:Canon EF 70-200mm f4 IS USM.jpg | Файл:Canon EF 70-200mm f4L USM.jpg | |
| Key features | |||||||
| Image stabilizer | Yes Yes, 3rd generation (3.5 stops) | Yes Yes, 3rd generation (3.5 stops) | Yes Yes, 2nd generation (3 stops) | No No | Yes Yes, 4th generation (5 stops) | Yes Yes, 3rd generation (4 stops) | No No |
| Environmental Sealing | Yes Yes | No No | Yes Yes | No No | |||
| Ultrasonic Motor | Yes Yes | ||||||
| L-series | Yes Yes | ||||||
| Diffractive Optics | No No | ||||||
| Macro | No No | ||||||
| Technical data | |||||||
| Maximum aperture | f/2.8 | f/4.0 | |||||
| Minimum aperture | f/32 | ||||||
| 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 circular aperture | 8 | 9 circular aperture | 8 | |||
| Closest focusing distance | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | ||
| Maximum Magnification | .21× | .17× | .16× | .27× | .21× | ||
| Physical data | |||||||
| Weight | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert |
| Maximum diameter | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | ||
| Length | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | Шаблон:Convert | |
| Filter diameter | 77 mm | 72 mm | 67 mm | ||||
| Accessories | |||||||
| Lens hood | Tulip-shaped (ET-87) | Tulip-shaped (ET-86) | Tulip-shaped (ET-83II) | ET-78B | Cylindrical (ET-74) | ||
| Retail information | |||||||
| Release date | August 2018 | April 2010 | September 2001 | March 1995 | June 2018 | November 2006 | September 1999 |
| Currently in production? | Yes Yes | No No | Yes Yes | No No[15] | |||
| MSRP US$ | $2,099.00 | $2,099.00 | $1,999.00 | $1,349.00 | $1,499.00 | $1,199.00 | $649.99 |
References
External links
- Official links
- Canon EF 70–200mm Шаблон:F/2.8L IS III USM
- Canon EF 70–200mm Шаблон:F/2.8L IS II USM Шаблон:Webarchive
- Canon EF 70–200mm Шаблон:F/2.8L IS USM Шаблон:Webarchive
- Canon EF 70–200mm Шаблон:F/2.8L USM Шаблон:Webarchive
- Canon EF 70–200mm Шаблон:F/4L IS II USM
- Canon EF 70–200mm Шаблон:F/4L IS USM
- Canon EF 70–200mm Шаблон:F/4L USM
