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Canon EF-S 24mm f/2.8 STM vs Canon RF 28mm F2.8 STM

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

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CanonEF-S 24mm f/2.8 STMCanonRF 28mm F2.8 STM
Overview
ReleasedNovember 2014July 2023
Optics
Lens typePrimePrime
Focal length24 mm28 mm
Maximum aperturef/2.8f/2.8
Minimum aperturef/22f/22
Optical constructionSix elements in five groupsEight elements in six groups
Special elementsAspherical lens elementThree plastic-moulded aspherical elements; Super Spectra coating; no fluorine coating
CoatingsSuper Spectra coatings according to Canon's UK store–
DiaphragmSeven blades with a circular aperture; micro-stepping aperture drive according to Canon's US datasheetSeven blades, circular aperture
Mount and compatibility
MountsCanon EF-SCanon RF
Image circleAPS-CFull frame
CompatibilityCanon EF-S compatible APS-C cameras; approximately 38 mm equivalent field of view; EOS M use requires the EF-EOS M adaptorCanon RF mount, full-frame image circle; RF extenders not compatible
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.16 m0.23 m
Maximum magnification0.27×0.17×
Optical stabilisationNoNo
Autofocus detailSTM autofocus supports Movie Servo AF; manual focus adjustment is available in One Shot AF according to Canon's US datasheetSTM autofocus and electronic manual focusing
Focus distance detailElectronically 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 WorldMinimum focusing distance 0.23 m
Magnification detail0.27× maximum magnification; EF12 II extension tube gives 0.77–0.50× and EF25 II gives 1.38–1.11× according to Canon's UK specificationMaximum 0.17× reproduction
Stabilisation detailNo optical image stabilisationNo lens optical IS; compatible camera stabilisation is separate
Design
Dust and moisture resistant–No
Filter diameter52 mm55 mm
Maximum diameter68.2 mm69.2 mm
Length22.8 mm24.7 mm
Weight125 g120 g
Controls–Combined focus/control ring with AF/Control/MF selector
Weather resistance–No dust or moisture resistance
Dimensions detail68.2 mm maximum diameter × 22.8 mm retracted lengthApproximately 69.2 mm maximum diameter × 24.7 mm length, retracted
Weight detail–Approximately 120 g lens
Lens hoodES-52 screw-in hood sold separately according to Amateur Photographer; Canon lists LP811 as the compatible pouchEW-55, sold separately
In the boxLens, E-52II front cap, Lens Dust Cap E and user manual according to Canon's UK storeLens, E-55 front cap, RF lens dust cap and user manual
Release detailCanon Camera Museum records November 2014 introduction; the Japanese announcement specified late November. No separately confirmed UK first-sale day is published in these sources.July 2023 marketed month in Canon Camera Museum

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