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The Canon EF-S 17–85mm f / 4–5.6 IS USM is a standard zoom lens for Canon digital single-lens reflex cameras with an EF-S lens mount and image stabilization. [1] [2] [3] The EF-S designation means it can only be used on EOS cameras with an APS-C sensor released after 2003.
A member of the L-series, the 17–40mm is a good substitute for the 16–35mm f / 2.8 lens, which is heavier and costs approximately twice as much. Canon now sells an image-stabilized 16–35mm f / 4 lens for about $300 more than the 17–40.
f / 1.2L USM f / 1.2L II USM f / 1.8 USM f/1.4L IS USM Image Key features Full-frame compatible Yes Image stabilizer No Yes Ultrasonic Motor Yes L-series Yes No Yes Diffractive Optics No Macro No Technical data Aperture (max-min) f / 1.2 – f / 16 f / 1.8 – f / 22 f / 1.4 – f / 22 Construction 7 groups / 8 elements 7 groups / 9 elements
The Canon EF-S 18–55mm lens f / 3.5–5.6 is a Canon-produced wide-angle to mid 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 a standard kit lens on Canon's consumer APS-C DSLRs.
It is praised as "one of the best general/multi-purpose lenses available", [1] [2] and ideal for available light photography on a Canon APS-C camera. [3]The fast f / 2.8 aperture, combined with 3-stop image stabilization, makes the 17–55 very useful in low light compared to an unstabilized f / 3.5–5.6 Canon EF-S 18–55mm lens, which is a frequent kit lens, and thus the 17–55 is much ...
The latest addition of the 18–135 series is the EF-S f/3.5-5.6 IS USM, announced on 17 February 2016. New features are the new Nano USM and the possibility to connect the Power Zoom Adapter PZ-E1, which allows a soft zoom for video. The lens is also available as bundle with the Canon EOS 77D and 80D, which was announced same date. [2]
He repped 18 times on the bench press, six more than he did at the combine, and ran an unofficial 4.58 seconds for his 40-yard dash, which would’ve ranked 17th among running backs at the combine ...
Hence, the lens may have an effective f-number of f/5.6 at 1× magnification to f/96 at 5× magnification. When a Canon Extender EF is attached, the usual f-number compensation is applied (in the previous example of f/5.6 at 5× magnification, the effective f-number would be f/180 if the Canon Extender 2× was attached to the lens ...