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Canon RF 24–70mm F2.8L IS USM vs Canon RF 28–70mm F2 L USM

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

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CanonRF 24–70mm F2.8L IS USMCanonRF 28–70mm F2 L USM
Overview
ReleasedSeptember 2019December 2018
Optics
Lens typeZoomZoom
Focal length24–70 mm28–70 mm
Maximum aperturef/2.8f/2
Minimum aperturef/22f/22
Optical construction21 elements in 15 groupsNineteen elements in thirteen groups
Special elementsThree glass-moulded aspherical elements and three UD elementsTwo ground and polished aspherical elements, two glass-moulded aspherical elements, one Super UD and two UD elements
CoatingsASC anti-reflection coating and fluorine coatingSWC and ASC coatings; front and rearmost surface fluorine coatings
DiaphragmNine blades with circular apertureNine aperture blades
Angle of viewFull-frame horizontal 74°–29°, vertical 53°–19°30′ and diagonal 84°–34°75°–34° diagonal
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityCanon EOS R cameras; full-frame image circle. RF optical model distinct from EF24–70mm F2.8L generations and RF28–70mm F2.8 IS STMCanon RF mount for full-frame and APS-C EOS R cameras
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.21 m0.39 m
Maximum magnification0.3×0.18×
Optical stabilisationYesNo
Autofocus detailNano USM autofocus; electronic full-time manual focus. Maker rear-focusing design does not change lens length while focusingUSM autofocus with full-time manual override; ring-type USM drive (OpticalLimits)
Focus distance detailMaker minimum focus distance 0.21 m at 24 mm; Photography Blog reports 0.38 m at 70 mm. AF/MF mode distinction unpublished and omittedMinimum focus 0.39 m
Magnification detailMaker maximum magnification 0.30× at 32 mm; no unpublished AF/MF distinction inferredMaximum 0.18×
Stabilisation detailLens optical IS rated five stops under CIPA guidelines at 70 mm with EOS R; body stabilisation is separateNo optical stabiliser (OpticalLimits and Digital Camera World)
Design
Dust and moisture resistantYesYes
Filter diameter82 mm95 mm
Maximum diameter88.5 mm103.8 mm
Length125.7 mm139.8 mm
Weight900 g1,430 g
ControlsZoom and focus rings, customisable lens control ring, AF/MF and IS switches; Japan maker offers a paid control-ring de-click serviceSeparate zoom, electronic manual-focus and customisable lens control rings
Zoom designExtending zoom barrel; dimensions measured retractedBarrel extends towards the long end of the zoom range (OpticalLimits)
Filter detail82 mm front filter thread–
Weather resistanceDust and moisture resistant construction requires attachment to a camera; cannot completely prevent dust or water ingress and is not waterproofDust and moisture resistant construction with front and rear fluorine coatings
Dimensions detailApproximately 88.5 mm maximum diameter × 125.7 mm length, retracted103.8 mm maximum diameter × 139.8 mm length with barrel retracted
Weight detailApproximately 900 g lensApproximately 1430 g lens
Lens hoodEW-88EEW-103 hood included
In the boxUK maker store lists lens, EW-88E hood, LP1222 case, Lens Dust Cap RF and E-82 II front capLens, E-95 front cap, RF dust cap, EW-103 hood, LP1424 lens case and user manual
Release detailSeptember 2019 marketed month in Canon Camera Museum; original Japan maker announcement gives late September. Exact worldwide first retail day is not inferred. Co-sold standard zooms are alternatives, with no inferred successor linkDecember 2018 marketed month in Canon Camera Museum

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