Canon EF 17-40mm lens
Encyclopedia
The EF 17-40mm 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 4 to 8.
and the EF 20-35mm 2.8L
being both faster and more expensive.
A member of the L-series
, the 17-40mm is a good substitute for the 16-35mm lens, which is heavier and costs approximately twice as much.
This lens is also a popular step up from the stock kit lens on many of Canon's EOS Digital family of cameras, the EF-S 18-55mm 3.5-5.6
, for those still wanting a wide angle lens. On a cropped sensor, it has 35 mm equivalent focal length
of 27-64mm. In this role, it is compared with the EF-S 17-55mm lens
.
or any of the EF 70-200mm
family (4L USM, 4L IS USM, 2.8L USM, 2.8L IS USM).
Wide-angle lens
From a design perspective, a wide angle lens is one that projects a substantially larger image circle than would be typical for a standard design lens of the same focal length; this enables either large tilt & shift movements with a view camera, or lenses with wide fields of view.More informally,...
lens
Photographic lens
A camera lens is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.While in principle a simple convex lens will suffice, in...
made by Canon Inc.
Canon Inc.
is a Japanese multinational corporation that specialises in the manufacture of imaging and optical products, including cameras, camcorders, photocopiers, steppers and computer printers. Its headquarters are located in Ōta, Tokyo, Japan.-Origins:...
The lens has an EF
Canon EF lens mount
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...
mount to work with the EOS
Canon EOS
The Canon EOS autofocus 35 mm film and digital SLR camera system was introduced in 1987 with the Canon EOS 650 and is still in production as Canon's current DSLR system...
line of cameras. Other than the front element, it is sealed against dust and water, and features a diaphragm which remains nearly circular from 4 to 8.
Audience
The 17-40mm is the least expensive of Canon's wide angle zooms, with the EF 16-35mm 2.8L USMCanon EF 16-35mm lens
The EF 16-35mm 2.8L USM lens is a professional wide-angle lens made by Canon Inc. It replaced the EF 17-35mm 2.8L USM lens, which had itself replaced the EF 20-35 2.8L lens.The lens has an EF mount to work with the EOS line of cameras...
and the EF 20-35mm 2.8L
Canon EF 20-35mm lens
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 2.8L and a consumer-grade 3.5-4.5.-Table:-Successor lenses:The 20-35mm lens was followed by two other L-series ultra-wide lenses:...
being both faster and more expensive.
A member of the L-series
Canon l lens
An L lens is a line of SLR photography lenses made by Canon.L lenses are Canon's top-of-the-line lenses. The "L" officially stands for "Luxury", a reference to the lenses' high price and proclaimed build quality. The use of "ASPH" was common to notate aspherical elements throughout Canon's and...
, the 17-40mm is a good substitute for the 16-35mm lens, which is heavier and costs approximately twice as much.
This lens is also a popular step up from the stock kit lens on many of Canon's EOS Digital family of cameras, the EF-S 18-55mm 3.5-5.6
Canon EF-S 18-55mm lens
The Canon EF-S 18-55mm lens 3.5-5.6 is a wide-angle to mild telephoto zoom lens for digital single-lens reflex cameras with an EF-S lens mount. The field of view has a 35 mm equivalent focal length of 28.8-88mm, and it is the standard kit lens on Canon's consumer DSLRs.There have been four releases...
, for those still wanting a wide angle lens. On a cropped sensor, it has 35 mm equivalent focal length
35 mm equivalent focal length
In photography, the 35 mm equivalent focal length is a measure that indicates the angle of view of a particular combination of a camera lens and film or sensor size...
of 27-64mm. In this role, it is compared with the EF-S 17-55mm lens
Canon EF-S 17-55mm lens
The Canon EF-S 17–55mm 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.-Praise:...
.
Companion lenses
This lens is often paired with an L series telephoto lens, such as the EF 28-300mm 3.5-5.6 L USMCanon EF 28-300mm lens
The EF 28-300mm f/3.5-5.6L IS USM lens is a superzoom lens made by Canon Inc.This lens has an EF type mount, that fits the Canon EOS line of cameras....
or any of the EF 70-200mm
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.2.8L IS USM2.8L IS II USM2.8L USM4L IS USM4L...
family (4L USM, 4L IS USM, 2.8L USM, 2.8L IS USM).