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Canon RF 24–105mm F4–7.1 IS STM vs Canon RF 45mm F1.2 STM

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

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CanonRF 24–105mm F4–7.1 IS STMCanonRF 45mm F1.2 STM
Overview
ReleasedApril 2020November 2025
Optics
Lens typeZoomPrime
Focal length24–105 mm45 mm
Maximum aperturef/4–7.1f/1.2
Minimum aperturef/22–40f/16
Optical construction13 elements in 11 groups, per Japan maker specification and Canon Camera MuseumNine elements in seven groups
Special elementsAspherical element shown in Canon Camera Museum optical diagramOne plastic-moulded aspherical element (Canon USA)
Coatings–Super Spectra coating
Aperture detailMinimum f/22 at 24 mm and f/40 at 105 mmf/1.2–16
DiaphragmSeven blades, 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, full-frame image circle; 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 distance0.13 m (manual focus)0.45 m
Maximum magnification0.5× (manual focus)0.13×
Optical stabilisationYesNo
Autofocus detailLead-screw STM, electronic manual focus; combined focus/control ringGear-type STM autofocus with magnetic focus-position detection; full-time electronic manual focus
Focus distance detailAutofocus minimum 0.20 m at 24 mm or 0.34 m at 105 mm; manual-focus Centre Focus Macro minimum 0.13 m at 24 mm, approximately 2.5 cm from the lens front, with sharpness concentrated in the image centreMinimum focusing distance 0.45 m; Canon does not separately specify AF/MF distances
Magnification detailAutofocus maximum 0.4× at 105 mm; manual-focus Centre Focus Macro maximum 0.5× at 24 mm, per Japan maker table and Camera Museum–
Stabilisation detailOptical IS rated five stops at 105 mm on EOS R under CIPA; lens optical rating is distinct from any camera sensor stabilisationNo optical image stabilisation (Canon USA)
Design
Dust and moisture resistantNoNo
Filter diameter67 mm67 mm
Maximum diameter76.6 mm78 mm
Length88.8 mm75 mm
Weight395 g346 g
ControlsCombined focus/control ring, zoom ring and separate stabilisation switch; OpticalLimits notes manual/auto focus is selected through camera settings rather than an AF/MF lens switchSeparate 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 designExtending zoom barrel–
Weather resistanceOpticalLimits and Cameralabs report no weather sealingNo dust or weather resistant construction (Canon USA)
Dimensions detailApproximately 76.6 mm maximum diameter ×88.8 mm lengthApproximately 78 mm maximum diameter × 75 mm length
Weight detailApproximately 395 g lensApproximately 346 g lens
Lens hoodEW-73D, not bundledOptional ES-73B hood and LP1116 case; E-67 II front cap and Lens Dust Cap RF listed by Canon
In the box–Front and rear lens caps (Amateur Photographer); hood not included
Release detailApril 2020 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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