Canon EF 20–35mm lens

Last updated March 18, 2019

The EF 20–35mm lens is a wide-angle lens made by Canon Inc., with an EF mount. There are two models, an L-series f/2.8L^[1] and a consumer-grade f/3.5–4.5.^[2]

In photography and cinematography, a wide-angle lens refers to a lens whose focal length is substantially smaller than the focal length of a normal lens for a given film plane. This type of lens allows more of the scene to be included in the photograph, which is useful in architectural, interior and landscape photography where the photographer may not be able to move farther from the scene to photograph it.

Canon Inc. is a Japanese multinational corporation specializing in the manufacture of imaging and optical products, including cameras, camcorders, photocopiers, steppers, computer printers and medical equipment. It's headquartered in Ōta, Tokyo, Japan.

Introduced in 1987, the EF lens mount is the standard lens mount on the Canon EOS family of SLR film and digital cameras. EF stands for "Electro-Focus": automatic focusing on EF lenses is handled by a dedicated electric motor built into the lens. Mechanically, it is a bayonet-style mount, and all communication between camera and lens takes place through electrical contacts; there are no mechanical levers or plungers.

Table

Attribute	f/2.8L	f/3.5–4.5
Image
Key features
Image stabilizer	No
Environmental Sealing	No
USM	No	Yes
L-series	Yes	No
Diffractive Optics	No
Technical data
Maximum aperture	f/2.8	f/3.5–4.5
Minimum aperture	f/32	f/22–27
Filter diameter	72 mm	77 mm
Horizontal viewing angle
Vertical viewing angle
Diagonal viewing angle
Physical data
Weight	570 g	340 g
Max. Diameter x Length	89 mm x 79.2 mm	83.5 mm x 68.9 mm
Groups/elements	12/15	11/12
# of diaphragm blades	8	5
Closest focusing distance	0.5 m	0.34 m
Retail information
Release date	October 1989	March 1993
MSRP ¥	¥190,700	¥77,000

Successor lenses

The 20-35mm lens was followed by two other L-series ultra-wide lenses:

Canon's series of L lenses are a professional line of photography lenses made by Canon. Canon has sold zoom and prime L-series lenses for the discontinued FD lens mount, for the current EF lens mount used on all Canon EOS SLR cameras and for the RF mount used on full-frame mirrorless interchangeable-lens cameras.

EF 17–35mm f/2.8L
EF 16–35mm f/2.8L USM
The EF 17–40mm f/4L USM is another wide-angle lens that has a similar focal range

The Canon EF 17–35mm f/2.8 lens was a wide-angle zoom lens made by Canon Inc.. It was replaced by the Canon EF 16–35mm lens.

The EF 16–35 mm lens is a family of professional wide-angle lenses made by Canon Inc. The original version, the EF 16-35mm f/2.8L USM, replaced the EF 17-35mm f/2.8L USM lens, which had itself replaced the EF 20-35mm f/2.8L lens.

The EF 17–40mm f/4L USM lens is a wide-angle lens made by Canon Inc. The lens has an EF mount to work with the EOS line of cameras. Other than the front element, it is sealed against dust and water, and features a diaphragm which remains nearly circular from f/4 to f/8. It is one of the few Canon photo lenses that are parfocal.

Related Research Articles

The EF 50mm lenses are a group of normal prime lenses made by Canon that share the same focal length. These lenses are based on the classic double-Gauss lens, with the f/1.8 being a standard six-element double-Gauss with an air gap and powers between element 2 and 3 and its faster cousins adding additional elements. The 50mm focal length, when used with a 35mm film or full-frame sensor, has been widely considered to match the perspective seen by the human eye.

The EF 35 mm lenses are four wide angle prime lenses with EF mount made by Canon Inc. The family also includes one EF-S lens that only mounts on Canon bodies with APS-C sensors. Due to the 1.6 crop factor of Canon APS-C sensors, all of the 35 mm lenses have a 35 mm equivalent focal length of 56 mm, making them normal lenses on APS-C bodies.

The Canon EF 28–70mm f/2.8L is an EF mount wide-to-normal zoom lens made by Canon from 1993 to 2002. It was replaced by the 24–70mm f/2.8L.

The EF 80–200mm lens is a discontinued telephoto zoom lens made by Canon. The lens has an EF lens mount that fits the EOS line of cameras.

The Canon EF 28–105 mm f/4–5.6 is an inexpensive zoom lens often included as a kit lens with Canon 35 mm single-lens reflex cameras. 28–105 mm is a standard wide to telephoto zoom range. The Canon EF 28–105 mm f/3.5–4.5 USM is a higher quality zoom lens with a better build quality. Currently every version of this lens is discontinued. Some versions of the lens may include the word macro or a flower icon which indicates macro capability, however due to the 1:5.2 image magnification ratio it cannot be considered as a true macro lens.

The Canon EF-S 10–22mm f/3.5–4.5 USM lens is a wide to ultra-wide angle zoom lens for Canon digital single-lens reflex cameras with a Canon EF-S lens mount. The field of view has a 35 mm equivalent focal length of 16–35mm, which is analogous to the EF 16–35mm f/2.8L on a full-frame camera. The 10–22mm is an internal focusing lens. Of the 13 elements, one is of Canon's Super Ultra-Low Dispersion glass and three are aspherical elements.

The EF 24–105mm f/4L IS USM is an EF mount wide-to-telephoto zoom lens. It was introduced by Canon in 2005 to complement the well-regarded 17–40mm f/4L USM and 70–200mm f/4L USM.

The Canon EF-S 17–55mm f/2.8 IS USM is a standard zoom lens for Canon digital single-lens reflex cameras with an EF-S lens mount. The field of view has a 35 mm equivalent focal length of 27–88mm.

The EF 500mm lenses are a group of super-telephoto prime lenses made by Canon that share the same focal length.

The Canon EF 20 mm f/2.8 USM lens is an ultra-wide-angle prime lens produced by Canon for the EF lens mount. It features an ultrasonic motor. On a camera with an APS-C sensor the focal length is equivalent to 32 mm, and it is classified as a wide-lens. It features a ring-type USM motor featuring full-time manual and a fixed front element. The optical scheme of the lens includes eleven element in nine groups without any special lens. The performances are considered good, but not enough to compete with modern prime lenses; some zoom lenses from the Canon L series offer similar performances.

Canon Inc. has produced seven different 24mm lenses for its Canon EF and EF-S lens mounts. Three have been discontinued after updated replacements were announced.

The EF 100–300mm refers to three telephoto zoom lenses produced by Canon. They are of the EF lens mount that is compatible with the EOS line of cameras.

The Canon EF-S 18–200mm lens is a superzoom lens, manufactured by Canon. It is the higher end kit lens for the Canon EOS 60D digital camera, and supplants the previous EF-S 17–85mm, in Canon's product line-up, losing 1mm off the wide end, and offering a roughly 2.5x longer telephoto end.

The EF 35-80mm f/4-5.6 USM lens is a family of EF mount wide-to-normal zoom lenses manufactured and sold by Canon. There were five versions made. One contained a peizoelectric motor, three contained a micro motor, and one contained a USM motor.

The EF 35-105mm lens is a family of EF mount wide-to-normal zoom lenses manufactured and sold by Canon. There were three versions made. The first version was released in 1987 as an f/3.5 - f/4.5 aperture lens. The next was released in 1991 as a f/4.5 - f/5.6 aperture lens. The last version was released in 1992 as a f/4.5 - f/5.6 USM version.

The Canon EF 35-135mm f/3.5-4.5 is an EF mount wide-to-normal zoom lens.

References

↑ Canon Inc. "EF20-35mm f/2.8L". Canon Camera Museum. Retrieved 2016-05-18.
↑ Canon Inc. "EF20-35mm f/3.5-4.5 USM". Canon Camera Museum. Retrieved 2016-05-18.

External links

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[canonmuseum_1st-1] Canon Inc. "EF20-35mm f/2.8L". Canon Camera Museum. Retrieved 2016-05-18.

[canonmuseum_2nd-2] Canon Inc. "EF20-35mm f/3.5-4.5 USM". Canon Camera Museum. Retrieved 2016-05-18.

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 40mm 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
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 135mm with Softfocus EF 1200mm