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Canon RF 20mm F1.4 L VCM vs Canon RF-S 18–150mm F3.5–6.3 IS STM

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

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CanonRF 20mm F1.4 L VCMCanonRF-S 18–150mm F3.5–6.3 IS STM
Overview
ReleasedApril 2025June 2022
Optics
Lens typePrimeZoom
Focal length20 mm18–150 mm
Maximum aperturef/1.4f/3.5–6.3
Minimum aperturef/16f/22–40
Optical constructionFifteen elements in eleven groups17 elements in 13 groups
Special elementsOne Super UD, two UD, one BR and two glass-moulded aspherical elements; ASC, SWC and Super Spectra coatings; front fluorine coatingOne UD, one plastic-moulded and one glass-moulded aspherical element; Super Spectra coating; no fluorine coating
Aperture detail–Minimum f/22 at 18 mm and f/40 at 150 mm with one-third-stop display
DiaphragmEleven blades with circular apertureSeven blades, circular aperture
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameAPS-C
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 with APS-C image circle; full-frame EOS R cameras use an APS-C crop; RF extenders and EF extension tubes not compatible
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.2 m0.12 m (manual focus)
Maximum magnification0.19×0.59× (manual focus)
Optical stabilisationNoYes
Autofocus detailRear focusing system driven by a VCM motorSTM autofocus and electronic manual focusing
Focus distance detailMinimum focus 0.2 mAutofocus minimum 0.17 m at 18–35 mm and 0.45 m at 150 mm; manual-focus minimum 0.12 m at 18–24 mm or 0.13 m at 35 mm
Magnification detailMaximum 0.19×Autofocus maximum 0.44× at 50 mm, per Japan maker table and Camera Museum; manual-focus maximum 0.59× at 35 mm
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 4.5 stops on EOS R10 at 150 mm under CIPA, yaw/pitch; up to seven stops coordinated with EOS R7 sensor IS at 150 mm under CIPA, yaw/pitch; Dynamic IS for movies
Design
Dust and moisture resistantYesNo
Filter diameter67 mm55 mm
Maximum diameter76.5 mm69 mm
Length99.3 mm84.5 mm
Weight519 g310 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 and zoom ring; AF/MF and IS controlled through camera settings
Zoom design–Extending 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 sealNo dust or moisture resistance
Dimensions detailApproximately 76.5 mm maximum diameter × 99.3 mm lengthApproximately 69 mm maximum diameter × 84.5 mm length, retracted
Weight detailApproximately 519 g lensApproximately 310 g lens
Lens hoodEW-73H hood includedEW-60F, sold separately
In the boxLens, E-67 II front cap, RF dust cap, EW-73H hood, LP1219 case, rear filter holder and user manualLens, E-55 front cap, RF lens dust cap and user manual
Release detailApril 2025 marketed month in Canon Camera MuseumJune 2022 marketed month in Canon Camera Museum

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