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Canon RF 14–35mm F4 L IS USM 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 14–35mm F4 L IS USMCanonRF 45mm F1.2 STM
Overview
ReleasedSeptember 2021November 2025
Optics
Lens typeZoomPrime
Focal length14–35 mm45 mm
Maximum aperturef/4f/1.2
Minimum aperturef/22f/16
Optical constructionSixteen elements in twelve groupsNine elements in seven groups
Special elementsTwo UD elements, one UD aspherical element and two glass-moulded aspherical elements; Super Spectra, SWC and ASC coatings; fluorine coating on the front surface of the front elementOne plastic-moulded aspherical element (Canon USA)
Coatings–Super Spectra coating
Aperture detail–f/1.2–16
DiaphragmNine blades with circular apertureNine aperture blades
Angle of view–43°35′ horizontal, 29°50′ vertical and 51°20′ diagonal on full frame
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityCanon RF mount for full-frame and APS-C EOS R cameras; RF extenders and EF extension tubes not compatibleCanon EOS R cameras; full-frame image circle
Teleconverter support–Canon RF extenders not compatible
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.2 m0.45 m
Maximum magnification0.38×0.13×
Optical stabilisationYesNo
Autofocus detailNano USM rear focusing system; full-time manual focus in One-Shot AFGear-type STM autofocus with magnetic focus-position detection; full-time electronic manual focus
Focus distance detailMinimum focus 0.2 m throughout the zoom rangeMinimum focusing distance 0.45 m; Canon does not separately specify AF/MF distances
Magnification detailMaximum 0.38× at 35 mm–
Stabilisation detailOptical IS rated 5.5 stops with EOS R at 35 mm under CIPA, yaw/pitch; coordinated IS rated seven stops with EOS R5 at 35 mm under CIPA, yaw/pitchNo optical image stabilisation (Canon USA)
Design
Dust and moisture resistantYesNo
Filter diameter77 mm67 mm
Maximum diameter84.1 mm78 mm
Length99.8 mm75 mm
Weight540 g346 g
ControlsZoom, electronic manual-focus and customisable control rings; AF/MF and stabiliser on/off switches; automatic panning detectionSeparate 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 designBarrel extends towards both ends of the zoom range; minimum length near 22 mm; camera-side electronic distortion correction contributes to the compact optical design–
Weather resistanceWeather-resistant seals at the mount, switches, zoom ring, focus ring and control ringNo dust or weather resistant construction (Canon USA)
Dimensions detailApproximately 84.1 mm maximum diameter × 99.8 mm minimum length near 22 mm; maximum length 107.9 mm at 35 mm (Canon USA specifications)Approximately 78 mm maximum diameter × 75 mm length
Weight detailApproximately 540 g lensApproximately 346 g lens
Lens hoodEW-83P petal hood includedOptional ES-73B hood and LP1116 case; E-67 II front cap and Lens Dust Cap RF listed by Canon
In the boxLens, E-77 II front cap, RF dust cap, EW-83P hood, LP1219 soft case and user manualFront and rear lens caps (Amateur Photographer); hood not included
Release detailSeptember 2021 marketed month in Canon Camera MuseumCanon 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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