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Canon RF 24–70mm F2.8L IS USM vs Canon RF 75–300mm F4–5.6

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

Better figure, where one is clearly better

CanonRF 24–70mm F2.8L IS USMCanonRF 75–300mm F4–5.6
Overview
ReleasedSeptember 2019May 2025
Optics
Lens typeZoomZoom
Focal length24–70 mm75–300 mm
Maximum aperturef/2.8f/4–5.6
Minimum aperturef/22f/32–45
Optical construction21 elements in 15 groupsThirteen elements in nine groups; Canon states the optical design is adapted from the EF 75–300mm F4–5.6 III
Special elementsThree glass-moulded aspherical elements and three UD elements–
CoatingsASC anti-reflection coating and fluorine coatingSuper Spectra; no fluorine coating
Aperture detail–Maximum f/4 at 75 mm and f/5.6 at 300 mm; minimum f/32 and f/45 respectively
DiaphragmNine blades with circular apertureSeven blades
Angle of viewFull-frame horizontal 74°–29°, vertical 53°–19°30′ and diagonal 84°–34°Full-frame diagonal 32°11′–8°15′; horizontal 27°–6°50′; vertical 18°11′–4°35′
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; 120–480 mm equivalent field of view on Canon APS-C
Teleconverter support–Not compatible with RF extenders (The-Digital-Picture)
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.21 m1.5 m
Maximum magnification0.3×0.25×
Optical stabilisationYesNo
Autofocus detailNano USM autofocus; electronic full-time manual focus. Maker rear-focusing design does not change lens length while focusingDC motor autofocus; no full-time manual focus override (Digital Camera World)
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 AF/MF mode distinction unpublished and omitted1.5 m minimum focus; front element and focus ring rotate during focusing (Digital Camera World and The-Digital-Picture)
Magnification detailMaker maximum magnification 0.30× at 32 mm; no unpublished AF/MF distinction inferred0.06× at 75 mm and 0.25× at 300 mm
Stabilisation detailLens optical IS rated five stops under CIPA guidelines at 70 mm with EOS R; body stabilisation is separateNo lens optical stabilisation
Video features–Substantial focus breathing in The-Digital-Picture's test
Design
Dust and moisture resistantYes–
Filter diameter82 mm58 mm
Maximum diameter88.5 mm71.2 mm
Length125.7 mm146.1 mm
Weight900 g507 g
ControlsZoom and focus rings, customisable lens control ring, AF/MF and IS switches; Japan maker offers a paid control-ring de-click serviceManual focus and zoom rings, AF/MF switch; no custom control ring (The-Digital-Picture)
Zoom designExtending zoom barrel; dimensions measured retractedExtending zoom barrel; further extension and front rotation during focusing (Digital Camera World)
Filter detail82 mm front filter thread58 mm front thread rotates during focusing
Weather resistanceDust and moisture resistant construction requires attachment to a camera; cannot completely prevent dust or water ingress and is not waterproofCanon UK's table lists dust/moisture resistance, but Digital Camera World and The-Digital-Picture both report no weather sealing
Dimensions detailApproximately 88.5 mm maximum diameter × 125.7 mm length, retracted71.2 mm maximum diameter × 146.1 mm retracted length
Weight detailApproximately 900 g lensApproximately 507 g lens
Lens hoodEW-88EOptional ET-60 hood, not included
In the boxUK maker store lists lens, EW-88E hood, LP1222 case, Lens Dust Cap RF and E-82 II front capLens, E-58 II lens cap, RF dust cap 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 linkMay 2025 release confirmed retrospectively by Canon's February 2026 press release and Canon Camera Museum

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