Canon RF 20mm F1.4 L VCM vs Canon RF 24–105mm F4L IS USM

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RF 20mm F1.4 L VCM compared with RF 24–105mm F4L IS USM

	CanonRF 20mm F1.4 L VCM	CanonRF 24–105mm F4L IS USM
Overview
Released
Released	April 2025	October 2018
Optics
Lens type
Lens type	Prime	Zoom
Focal length
Focal length	20 mm	24–105 mm
Maximum aperture
Maximum aperture	f/1.4	f/4
Minimum aperture
Minimum aperture	f/16	f/22
Optical construction
Optical construction	Fifteen elements in eleven groups	18 elements in 14 groups
Special elements
Special elements	One Super UD, two UD, one BR and two glass-moulded aspherical elements; ASC, SWC and Super Spectra coatings; front fluorine coating	Three glass-moulded aspherical elements and one UD element
Coatings
Coatings	–	ASC and Super Spectra anti-reflection coatings; fluorine coatings on front and rearmost surfaces
Diaphragm
Diaphragm	Eleven blades with circular aperture	Nine blades with circular aperture
Angle of view
Angle of view	–	Full-frame horizontal 74°–19°20′, vertical 53°–13° and diagonal 84°–23°20′
Mount and compatibility
Mounts
Mounts	Canon RF	Canon RF
Image circle
Image circle	Full frame	Full frame
Compatibility
Compatibility	Canon 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	Canon EOS R cameras; full-frame image circle. RF optical model distinct from EF24–105mmF4L generations and RF24–105mmF4–7.1STM
Teleconverter support
Teleconverter support	–	Canon RF extenders not compatible; UK maker also lists EF12 II/EF25 II extension tubes incompatible
Focus and stabilisation
Autofocus
Autofocus	Yes	Yes
Minimum focus distance
Minimum focus distance	0.2 m	0.45 m
Maximum magnification
Maximum magnification	0.19×	0.24×
Optical stabilisation
Optical stabilisation	No	Yes
Autofocus detail
Autofocus detail	Rear focusing system driven by a VCM motor	Nano USM autofocus; electronic manual focus
Focus distance detail
Focus distance detail	Minimum focus 0.2 m	Maker minimum focus distance 0.45 m; published AF/MF distinction absent and omitted
Magnification detail
Magnification detail	Maximum 0.19×	Maker maximum magnification 0.24×; no unpublished AF/MF distinction inferred
Stabilisation detail
Stabilisation detail	No optical stabiliser; Canon rates EOS R1 in-body stabilisation at 8 stops centrally and 5 stops in the corners under CIPA-2024 testing	Lens optical IS rated five stops, CIPA with EOS R at105mm in Canon Camera Museum; OpticalLimits obtained about3.5–4stops in its electronic-shutter test, a separate measured result
Video features
Video features	–	Nano USM supports smooth movie autofocus; maker describes combined lens optical and camera electronic video IS separately from lens-only rating
Design
Dust and moisture resistant
Dust and moisture resistant	Yes	Yes
Filter diameter
Filter diameter	67 mm	77 mm
Maximum diameter
Maximum diameter	76.5 mm	83.5 mm
Length
Length	99.3 mm	107.3 mm
Weight
Weight	519 g (better)	700 g
Controls
Controls	Electronic manual-focus, customisable control and smooth-action iris rings; iris Auto-position lock; customisable lens function button; AF/MF switch	Zoom and focus rings, customisable lens control ring and zoom transport lock; OpticalLimits found no creeping during its test
Zoom design
Zoom design	–	Extending zoom barrel; maker physical dimensions measured retracted
Filter detail
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	77 mm front filter thread
Weather resistance
Weather resistance	Dust and moisture resistant construction with mount rubber seal	Dust and moisture resistant construction, requiring attachment to a camera; cannot completely prevent dust/water ingress and is not waterproof
Dimensions detail
Dimensions detail	Approximately 76.5 mm maximum diameter × 99.3 mm length	Approximately83.5mm maximum diameter ×107.3mm length in retracted state
Weight detail
Weight detail	Approximately 519 g lens	Approximately700g lens
Lens hood
Lens hood	EW-73H hood included	EW-83N
In the box
In the box	Lens, E-67 II front cap, RF dust cap, EW-73H hood, LP1219 case, rear filter holder and user manual	UK maker store lists lens, E-77 II cap, Lens Dust Cap RF, EW-83N hood, LP1319 case and user manual
Release detail
Release detail	April 2025 marketed month in Canon Camera Museum	Canon Japan FAQ gives first sale 25 October 2018, consistent with Camera Museum marketed month; no exact UK on-sale day inferred. Maker Japan offers a control-ring de-click service, so the launch DCW statement that it cannot be de-clicked is not treated as current service availability. Co-sold RF standard zooms are alternatives, not inferred successor links