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Canon EF 24–70mm f/2.8L II USM vs Canon RF 28–70mm F2.8 IS STM

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

Better figure, where one is clearly better

CanonEF 24–70mm f/2.8L II USMCanonRF 28–70mm F2.8 IS STM
Overview
ReleasedSeptember 2012September 2024
Optics
Lens typeZoomZoom
Focal length24–70 mm28–70 mm
Maximum aperturef/2.8f/2.8
Minimum aperturef/22f/22
Optical construction18 elements in 13 groups15 elements in 12 groups
Special elementsThree aspherical elements, two UD elements and one Super UD elementTwo UD elements and two GMo aspherical elements
CoatingsFluorine on the front surface of the first element and rear surface of the last elementSuper Spectra; no fluorine coating, per UK maker specification
DiaphragmNine blades with a circular apertureNine blades
Angle of viewFull-frame horizontal 74°–29°; vertical 53°–19°30′; diagonal 84°–34°–
Mount and compatibility
MountsCanon EFCanon RF
Image circleFull frameFull frame
CompatibilityCanon EF cameras, including full-frame and APS-C DSLRsFull-frame image circle, Canon RF mount; incompatible with EF DSLRs and EOS M bodies. Canon RF extenders not compatible
Adaptor supportCanon UK supports EOS M cameras with an EF-EOS M mount adaptor–
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.38 m0.24 m (manual focus)
Maximum magnification0.21×0.24×
Optical stabilisationNoYes
Autofocus detailRing-type USM with full-time manual overrideLead-screw STM with magnetic motor-speed sensor and feedback control, electronic manual focus
Focus distance detailInternal focusing; filter thread does not rotate during focusing (DPReview)Minimum focus at 28 mm is 0.27 m in AF or 0.24 m in MF; main figure retains the closer MF mode
Magnification detailMaximum 0.21× at 70 mmMaximum 0.24× at 70 mm in either AF or MF
Stabilisation detailNo optical image stabilisation (DPReview and OpticalLimits)Lens optical IS rated 5.5 central stops at 70 mm with EOS R8, yaw/pitch under CIPA2024. Japan current feature page rates coordinated EOS R6 Mark II body/lens IS 7.5 central and 7.0 peripheral stops, yaw/pitch/roll; original press release gives the same coordinated rating with EOS R1
Video features–Smooth STM movie focusing; compatible camera breathing correction is digital. Cameralabs observes uncorrected focus breathing, more visible at 28 mm
Design
Dust and moisture resistantYesYes
Filter diameter82 mm67 mm
Maximum diameter88.5 mm76.5 mm
Length113 mm92.2 mm
Weight805 g490 g
ControlsSeparate focus and zoom rings; zoom lock leverShared focus/control ring with AF/control/MF selector; separate zoom ring and stabilisation switch
Zoom designLens extends when zoomed towards 70 mm; zoom lock holds the 24 mm position (DPReview)Retractable barrel must be extended to 28 mm before shooting; length 92.2 mm stored, 112.4 mm at 28 mm and 138.9 mm at 70 mm, per Japan maker table
Weather resistanceDust and moisture resistant structure at the mount, switch panel and zoom ringUK maker states dust/moisture resistance, including rubber mount seal; no waterproof rating published
Dimensions detail88.5 mm maximum diameter × 113 mm length in the retracted stateMaximum diameter 76.5 mm; 92.2 mm length when retracted
Weight detail–UK current specification and store state 490 g; Japan current table, Camera Museum and original press release state 495 g. Main value follows UK specification; no undocumented regional variant inferred
Lens hoodEW-88CEW-73D, sold separately
In the boxLens, E-82 U front cap, Lens Dust Cap E, EW-88C hood, LP1219 case and user manualUK maker store lists lens, E-67 II front cap, rear dust cap and user manual
Release detailMarketed in September 2012 according to Canon Camera MuseumSeptember 2024 marketed month in Canon Camera Museum; original maker release specifies 27 September in Japan. No exact worldwide first-sale day inferred; no successor link inferred across co-sold standard zooms

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