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Canon EF 16–35mm f/2.8L III USM vs Canon EF-S 24mm f/2.8 STM

Every spec side by side, from each maker's published figures.

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CanonEF 16–35mm f/2.8L III USMCanonEF-S 24mm f/2.8 STM
Overview
ReleasedOctober 2016November 2014
Optics
Lens typeZoomPrime
Focal length16–35 mm24 mm
Maximum aperturef/2.8f/2.8
Minimum aperturef/22f/22
Optical constructionSixteen elements in eleven groupsSix elements in five groups
Special elementsTwo large-diameter glass-moulded aspherical elements, one ground aspherical element and two UD elementsAspherical lens element
CoatingsAir Sphere Coating and Subwavelength Structure Coating; front and rear fluorine coatings according to The Digital PictureSuper Spectra coatings according to Canon's UK store
DiaphragmNine circular bladesSeven blades with a circular aperture; micro-stepping aperture drive according to Canon's US datasheet
Angle of viewHorizontal 98°–54°; vertical 74°10′–38°; diagonal 108°10′–63°–
Mount and compatibility
MountsCanon EFCanon EF-S
Image circleFull frameAPS-C
CompatibilityFull-frame and APS-C Canon EF DSLRsCanon EF-S compatible APS-C cameras; approximately 38 mm equivalent field of view; EOS M use requires the EF-EOS M adaptor
Teleconverter supportExtenders cannot be used; the manual also states that no compatible close-up lenses are available–
Adaptor supportCanon UK lists EOS M use with the EF-EOS M mount adaptor–
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.28 m0.16 m
Maximum magnification0.25×0.27×
Optical stabilisationNoNo
Autofocus detailRing USM with full-time manual override; keep the shutter half-pressed after autofocus when adjusting focus manuallySTM autofocus supports Movie Servo AF; manual focus adjustment is available in One Shot AF according to Canon's US datasheet
Focus distance detail–Electronically coupled manual focusing requires the camera to be powered on and metering activated according to Amateur Photographer; the front barrel extends but does not rotate according to Digital Camera World
Magnification detailAt 35 mm, EF12 II gives 0.65×–0.36× and EF25 II gives 1.14×–0.80×; both tubes are incompatible at 16 mm0.27× maximum magnification; EF12 II extension tube gives 0.77–0.50× and EF25 II gives 1.38–1.11× according to Canon's UK specification
Stabilisation detail–No optical image stabilisation
Design
Dust and moisture resistantYes–
Filter diameter82 mm52 mm
Maximum diameter88.5 mm68.2 mm
Length127.5 mm22.8 mm
Weight790 g125 g
ControlsSeparate zoom and focus rings, AF/MF switch and distance window–
Zoom designConstant outer length with inner front-tube movement according to both reviews; the manual advises zooming before focusing–
Filter detailOne front filter may be fitted; the manual specifies the 82 mm Canon PL-C B polariser and removing the hood for adjustment–
Weather resistanceSealed construction and rubber mount ring; the manual recommends an 82 mm Canon PROTECT filter for best dust and water resistance–
Dimensions detailLength measured from the mount surface to the front; front and rear caps add 24 mm68.2 mm maximum diameter × 22.8 mm retracted length
Weight detailApproximately 790 g for the lens alone, excluding accessories, in Canon's instruction manual–
Lens hoodReversible EW-88D hood with release buttonES-52 screw-in hood sold separately according to Amateur Photographer; Canon lists LP811 as the compatible pouch
In the boxLens, EW-88D hood, LP1222 case, E-82 II front cap, rear cap E and user manualLens, E-52II front cap, Lens Dust Cap E and user manual according to Canon's UK store
Release detailCanon Camera Museum records October 2016 marketing; no first-sale day is statedCanon Camera Museum records November 2014 introduction; the Japanese announcement specified late November. No separately confirmed UK first-sale day is published in these sources.

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