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Canon RF 45mm F1.2 STM vs Canon RF 70–200mm F4 L IS USM

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

Better figure, where one is clearly better

CanonRF 45mm F1.2 STMCanonRF 70–200mm F4 L IS USM
Overview
ReleasedNovember 2025March 2021
Optics
Lens typePrimeZoom
Focal length45 mm70–200 mm
Maximum aperturef/1.2f/4
Minimum aperturef/16f/32
Optical constructionNine elements in seven groupsSixteen elements in eleven groups
Special elementsOne plastic-moulded aspherical element (Canon USA)Four UD elements; Air Sphere and fluorine coatings
CoatingsSuper Spectra coating–
Aperture detailf/1.2–16–
DiaphragmNine aperture bladesNine blades
Angle of view43°35′ horizontal, 29°50′ vertical and 51°20′ diagonal on full frame–
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityCanon EOS R cameras; full-frame image circleCanon RF mount for full-frame and APS-C EOS R bodies; RF extenders not compatible
Teleconverter supportCanon RF extenders not compatible–
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.45 m0.6 m
Maximum magnification0.13×0.28×
Optical stabilisationNoYes
Autofocus detailGear-type STM autofocus with magnetic focus-position detection; full-time electronic manual focusDual Nano USM drives focus and floating lens groups independently; electronic floating focus system
Focus distance detailMinimum focusing distance 0.45 m; Canon does not separately specify AF/MF distancesMinimum focus 0.6 m throughout the zoom range
Magnification detail–Maximum 0.28× at 200 mm
Stabilisation detailNo optical image stabilisation (Canon USA)Optical IS rated five stops with EOS R at 200 mm under CIPA, yaw/pitch; coordinated IS rated 7.5 stops with EOS R5 at 200 mm under CIPA, yaw/pitch
Design
Dust and moisture resistantNoYes
Filter diameter67 mm77 mm
Maximum diameter78 mm83.5 mm
Length75 mm119 mm
Weight346 g695 g
ControlsSeparate focus and clickable control rings; AF/MF switch; no iris ring or lens function button (Canon USA)Zoom, electronic manual-focus and customisable control rings; focus limiter with full or 2.5 m–infinity range; AF/MF, IS on/off and three IS mode switches; zoom lock at 70 mm
Zoom design–Extending barrel; 119 mm length at 70 mm; 176 mm extended at 200 mm (Cameralabs)
Filter detail67 mm front screw-in filter thread–
Weather resistanceNo dust or weather resistant construction (Canon USA)Dust and water resistant construction; Canon states this cannot completely prevent dust or droplets entering
Dimensions detailApproximately 78 mm maximum diameter × 75 mm lengthApproximately 83.5 mm maximum diameter × 119 mm length, retracted
Weight detailApproximately 346 g lensApproximately 695 g lens
Tripod mount–No tripod collar mount (Cameralabs)
Lens hoodOptional ES-73B hood and LP1116 case; E-67 II front cap and Lens Dust Cap RF listed by CanonET-83G (WIII) hood included
In the boxFront and rear lens caps (Amateur Photographer); hood not includedLens, E-77 II front cap, RF dust cap, ET-83G (WIII) hood, LP1319 case and user manual kit
Release detailCanon Japan's 14 November 2025 notice confirms first sale on 28 November 2025; Photography Blog instead reports availability from 20 November without a matching regional maker day, so no UK date is inferredMarch 2021 marketed month in Canon Camera Museum and Canon's global annual lens-release list

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