Canon EF 70–200mm lens

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.

f/2.8L IS USM
f/2.8L IS II USM
f/2.8L USM
f/4L IS USM
f/4L USM

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 photo-journalists, some portrait photographers also prefer this 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 (resistant against dust and water) when used with a weather sealed camera to match such as the 5D mark II; 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.

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 or 91-260mm on full frame camera. This is due to the crop factor inherent with APS-C or APS-H (crop) sensor digital SLR cameras.

An example would be taking an image of a rock using two cameras with the same lens. The first camera a 18mp full frame and the second a 18mp APS-C, both shooting the same composition in a stationary position. The first image will be more "wide" while the second image will be more "magnified". After bringing the results into an image editing program and enlarging the first image so that the rock is the same size in both images, one will see that the enlarged image is approximately 160% (1.6x) of the original.

The major advantage to this extra "reach" would be the utilizing of the full sensor space for a cropped image rather than having to crop afterwards, thus utilizing parts of the sensor that would have otherwise been wasted. The major disadvantage would be the lack of change in perspective, since the focal length has not actually changed it will be like shooting with the field of view of a 112-320mm lens on a full frame sensor while having the perspective of 70-200mm lens. The resulting image will appear to have a less pleasing background blur and unlike using a actual 112-320mm lens on a full frame sensor.

Canon full frame cameras include: EOS 5D Mark II and EOS 1Ds Mark III. Canon APS-C cameras include: EOS 550D, EOS 60D and EOS 7D.

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].

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
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
Ultrasonic Motor	Yes
L-series	Yes
Diffractive Optics	No
Macro	No
Maximum aperture	f/2.8			f/4
Minimum aperture	f/32
Weight	1,490 g (3.28 lb)	1,470 g (3.24 lb)	1,310 g (2.89 lb)	760 g (1.68 lb)	705 g (1.554 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)			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	$1,349.00	$1,249.00	$640.00

Gallery

File:70-200mm 2.8L IS USM II sample.jpg
The f/2.8 IS II with lens hood on a Canon 7D body
The f/2.8L lens with lens hood
The f/2.8L lens
The f/4L lens without lens hood
The f/4L lens on a Canon Digital Rebel
Additional pins on the 70-200mm f/4 L EF mount

References

External links

v t e Canon EF/EF-S/EF-M lenses
EF-S zoom	EF-S 10–18mm EF-S 10–22mm EF-S 15–85mm EF-S 17–55mm EF-S 17–85mm EF-S 18–55mm EF-S 18–135mm EF-S 18–200mm EF-S 55–250mm
Ultra-wide zoom	EF 11–24mm EF 16–35mm EF 17–40mm
Standard zoom	EF 24–70mm EF 24–105mm EF 28–135mm EF 28–300mm
Telephoto zoom	EF 70–200mm EF 70–300mm EF 75–300mm EF 100–400mm EF 200–400mm
Wide-angle prime	EF 14mm EF 20mm EF 24mm EF-S 24mm EF 28mm EF 35mm
Standard prime	EF 50mm
Telephoto prime	EF 85mm EF 100mm EF 135mm EF 200mm
Super telephoto prime	EF 300mm EF 400mm EF 500mm EF 600mm EF 800mm
Distorting lens	EF 8–15mm Fisheye
Tilt-shift	TS-E 17mm TS-E 24mm TS-E 45mm TS-E 50mm TS-E 90mm TS-E 135mm
Macro	EF-M 28mm Macro EF-S 35mm Macro EF 50mm Compact Macro TS-E 50mm MACRO EF-S 60mm Macro MP-E 65mm 1–5x Macro TS-E 90mm Macro EF 100mm Macro TS-E 135mm Macro EF 180mm Macro
EF-M zoom	EF-M 11–22mm EF-M 15–45mm EF-M 18–55mm EF-M 18–150mm EF-M 55–200mm
EF-M prime	EF-M 22mm EF-M 28mm Macro EF-M 32mm
Lens accessories	Extender EF
Discontinued zoom	EF 17–35mm EF 20–35mm EF 22–55mm EF 24–85mm EF 28–70mm EF 28–80mm EF 28–90mm EF 28–105mm EF 28–200mm EF 35–70mm EF 35–80mm EF 35–105mm EF 35–135mm EF 35–350mm EF 38–76mm EF 50–200mm EF 55–200mm EF 70–210mm EF 80–200mm EF 90–300mm EF 100–200mm EF 100–300mm
Discontinued prime	EF 15mm Fisheye EF 40mm EF 135mm with Softfocus EF 1200mm TS-E 45mm