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Canon RF 15–30mm F4.5–6.3 IS STM vs Canon RF 20mm F1.4 L VCM

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CanonRF 15–30mm F4.5–6.3 IS STMCanonRF 20mm F1.4 L VCM
Overview
ReleasedAugust 2022April 2025
Optics
Lens typeZoomPrime
Focal length15–30 mm20 mm
Maximum aperturef/4.5–6.3f/1.4
Minimum aperturef/22–32f/16
Optical construction13 elements in 11 groupsFifteen elements in eleven groups
Special elementsOne plastic-moulded aspherical and two UD elements; Super Spectra coating; no fluorine coatingOne Super UD, two UD, one BR and two glass-moulded aspherical elements; ASC, SWC and Super Spectra coatings; front fluorine coating
Aperture detailMinimum f/22 at 15 mm and f/32 at 30 mm–
DiaphragmSeven bladesEleven blades with circular aperture
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityFull-frame Canon RF mount; compatible with APS-C EOS R bodies; RF extenders and EF extension tubes not compatibleCanon 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 firmware
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.128 m (manual focus)0.2 m
Maximum magnification0.52× (manual focus)0.19×
Optical stabilisationYesNo
Autofocus detailSTM autofocus and electronic manual focusingRear focusing system driven by a VCM motor
Focus distance detailAutofocus minimum 0.28 m across the zoom range; manual-focus minimum 0.128 m at 15 mm and 0.28 m at 20–30 mmMinimum focus 0.2 m
Magnification detailAutofocus maximum 0.09× at 15 mm, 0.11× at 20 mm and 0.16× at 30 mm; manual-focus maximum 0.52× at 15 mm, 0.11× at 20 mm and 0.16× at 30 mmMaximum 0.19×
Stabilisation detailOptical IS rated 5.5 stops with EOS R at 30 mm under CIPA, yaw/pitch; coordinated IS rated seven stops with EOS R5 at 30 mm under CIPA, yaw/pitchNo optical stabiliser; Canon rates EOS R1 in-body stabilisation at 8 stops centrally and 5 stops in the corners under CIPA-2024 testing
Design
Dust and moisture resistantNoYes
Filter diameter67 mm67 mm
Maximum diameter76.6 mm76.5 mm
Length88.4 mm99.3 mm
Weight390 g519 g
ControlsCombined focus/control ring with selector, zoom ring and IS on/off switchElectronic manual-focus, customisable control and smooth-action iris rings; iris Auto-position lock; customisable lens function button; AF/MF switch
Filter detail–67 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
Zoom designBarrel extends towards the 15 mm setting–
Weather resistanceNo dust or moisture resistanceDust and moisture resistant construction with mount rubber seal
Dimensions detailApproximately 76.6 mm maximum diameter × 88.4 mm length, retractedApproximately 76.5 mm maximum diameter × 99.3 mm length
Weight detailApproximately 390 g lensApproximately 519 g lens
Lens hoodEW-73E hood and LP1116 pouch, sold separatelyEW-73H hood included
In the boxLens, E-67 II front cap, RF lens dust cap and user manualLens, E-67 II front cap, RF dust cap, EW-73H hood, LP1219 case, rear filter holder and user manual
Release detailAugust 2022 marketed month in Canon Camera MuseumApril 2025 marketed month in Canon Camera Museum

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