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Canon RF 20mm F1.4 L VCM vs Canon RF 24–105mm F4–7.1 IS STM

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

Better figure, where one is clearly better

CanonRF 20mm F1.4 L VCMCanonRF 24–105mm F4–7.1 IS STM
Overview
ReleasedApril 2025April 2020
Optics
Lens typePrimeZoom
Focal length20 mm24–105 mm
Maximum aperturef/1.4f/4–7.1
Minimum aperturef/16f/22–40
Optical constructionFifteen elements in eleven groups13 elements in 11 groups, per Japan maker specification and Canon Camera Museum
Special elementsOne Super UD, two UD, one BR and two glass-moulded aspherical elements; ASC, SWC and Super Spectra coatings; front fluorine coatingAspherical element shown in Canon Camera Museum optical diagram
Aperture detail–Minimum f/22 at 24 mm and f/40 at 105 mm
DiaphragmEleven blades with circular apertureSeven blades, circular aperture
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityCanon RF mount for full-frame and APS-C EOS R cameras; RF extenders not compatible. Iris ring provides movie aperture control; Canon lists EOS R, RP, Ra, R3, R5, R6, R6 Mark II, R7, R8, R10, R50, R100 and R5 C as unable to set still-photo aperture with this ring even with their latest firmwareCanon RF mount, full-frame image circle; RF extenders and EF extension tubes not compatible
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.2 m0.13 m (manual focus)
Maximum magnification0.19×0.5× (manual focus)
Optical stabilisationNoYes
Autofocus detailRear focusing system driven by a VCM motorLead-screw STM, electronic manual focus; combined focus/control ring
Focus distance detailMinimum focus 0.2 mAutofocus 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 centre
Magnification detailMaximum 0.19×Autofocus 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 detailNo optical stabiliser; Canon rates EOS R1 in-body stabilisation at 8 stops centrally and 5 stops in the corners under CIPA-2024 testingOptical IS rated five stops at 105 mm on EOS R under CIPA; lens optical rating is distinct from any camera sensor stabilisation
Design
Dust and moisture resistantYesNo
Filter diameter67 mm67 mm
Maximum diameter76.5 mm76.6 mm
Length99.3 mm88.8 mm
Weight519 g395 g
ControlsElectronic manual-focus, customisable control and smooth-action iris rings; iris Auto-position lock; customisable lens function button; AF/MF switchCombined 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 switch
Zoom design–Extending zoom barrel
Filter detail67 mm front thread and rear filter holder; Canon specifies a single rear filter no thicker than 0.2 mm and recommends removing the holder when unused to avoid possible ghosting–
Weather resistanceDust and moisture resistant construction with mount rubber sealOpticalLimits and Cameralabs report no weather sealing
Dimensions detailApproximately 76.5 mm maximum diameter × 99.3 mm lengthApproximately 76.6 mm maximum diameter ×88.8 mm length
Weight detailApproximately 519 g lensApproximately 395 g lens
Lens hoodEW-73H hood includedEW-73D, not bundled
In the boxLens, E-67 II front cap, RF dust cap, EW-73H hood, LP1219 case, rear filter holder and user manual–
Release detailApril 2025 marketed month in Canon Camera MuseumApril 2020 marketed month in Canon Camera Museum

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