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Canon RF 24-105mm F2.8 L IS USM Z vs Canon RF 45mm F1.2 STM

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

Better figure, where one is clearly better

CanonRF 24-105mm F2.8 L IS USM ZCanonRF 45mm F1.2 STM
Overview
ReleasedNovember 2023November 2025
Optics
Lens typeZoomPrime
Focal length24–105 mm45 mm
Maximum aperturef/2.8f/1.2
Minimum aperturef/22f/16
Optical construction23 elements in 18 groupsNine elements in seven groups
Special elementsThree aspherical and four UD elementsOne plastic-moulded aspherical element (Canon USA)
CoatingsAir Sphere Coating; fluorine front-element coatingSuper Spectra coating
Aperture detail–f/1.2–16
Diaphragm11 bladesNine aperture blades
Angle of viewDiagonal 84°–23°20′; horizontal 74°–19°20′; vertical 53°–13°43°35′ horizontal, 29°50′ vertical and 51°20′ diagonal on full frame
Mount and compatibility
MountsCanon RFCanon RF
Image circle–Full frame
CompatibilityCanon RF mount; Digital Camera World identifies full-frame coverageCanon EOS R cameras; full-frame image circle
Teleconverter support–Canon RF extenders not compatible
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.45 m0.45 m
Maximum magnification0.29×0.13×
Optical stabilisationYesNo
Autofocus detailTwo Nano USM motors and floating-focus systemGear-type STM autofocus with magnetic focus-position detection; full-time electronic manual focus
Focus distance detailMinimum focusing distance 0.45 m throughout the zoom rangeMinimum focusing distance 0.45 m; Canon does not separately specify AF/MF distances
Magnification detailMaximum 0.08× at 24 mm or 0.29× at 105 mm; Digital Camera World's table incorrectly prints 0.8× at 24 mm, so the maker's 0.08× is retained–
Stabilisation detailMaker 5.5 stops on EOS R at 105 mm, CIPA yaw/pitch; coordinated lens/body stabilisation up to 8 stops on EOS R3 at 105 mm under the same test directionsNo optical image stabilisation (Canon USA)
Video featuresFocus-breathing suppression; optional PZ-E2 power-zoom adapter is separate and required for powered zoom–
Design
Dust and moisture resistantYesNo
Filter diameter82 mm67 mm
Maximum diameter88.5 mm78 mm
Length199 mm75 mm
Weight1,330 g346 g
ControlsIris ring and two customisable lens-function buttons; three IS modes for stationary subjects, panning or unpredictable movementSeparate focus and clickable control rings; AF/MF switch; no iris ring or lens function button (Canon USA)
Filter detail–67 mm front screw-in filter thread
Zoom designFixed-length internal zoom–
Weather resistanceDust- and drip-resistant construction; no published IP ratingNo dust or weather resistant construction (Canon USA)
Dimensions detail–Approximately 78 mm maximum diameter × 75 mm length
Weight detailCanon Camera Museum gives approximately 1330 g; Canon Asia lists 1430 g without stating the accessory basis, and Digital Camera World gives 1350 g. Museum figure used; no inferred accessory-excluded weightApproximately 346 g lens
Tripod mountDetachable without a special tool–
Lens hoodEW-88E includedOptional ES-73B hood and LP1116 case; E-67 II front cap and Lens Dust Cap RF listed by Canon
In the boxLens Cap E-82 II, Lens Dust Cap RF, EW-88E hood and LZ1326 (B) bag on Canon Asia's pageFront and rear lens caps (Amateur Photographer); hood not included
Release detailCanon Camera Museum records first marketing in November 2023; no precise retail day inferredCanon 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 inferred

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