Canon RF 20mm F1.4 L VCM vs Canon RF 28–70mm F2 L USM

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RF 20mm F1.4 L VCM compared with RF 28–70mm F2 L USM

	CanonRF 20mm F1.4 L VCM	CanonRF 28–70mm F2 L USM
Overview
Released
Released	April 2025	December 2018
Optics
Lens type
Lens type	Prime	Zoom
Focal length
Focal length	20 mm	28–70 mm
Maximum aperture
Maximum aperture	f/1.4	f/2
Minimum aperture
Minimum aperture	f/16	f/22
Optical construction
Optical construction	Fifteen elements in eleven groups	Nineteen elements in thirteen 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	Two ground and polished aspherical elements, two glass-moulded aspherical elements, one Super UD and two UD elements
Coatings
Coatings	–	SWC and ASC coatings; front and rearmost surface fluorine coatings
Diaphragm
Diaphragm	Eleven blades with circular aperture	Nine aperture blades
Angle of view
Angle of view	–	75°–34° diagonal
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 RF mount for full-frame and APS-C EOS R cameras
Focus and stabilisation
Autofocus
Autofocus	Yes	Yes
Minimum focus distance
Minimum focus distance	0.2 m	0.39 m
Maximum magnification
Maximum magnification	0.19×	0.18×
Optical stabilisation
Optical stabilisation	No	No
Autofocus detail
Autofocus detail	Rear focusing system driven by a VCM motor	USM autofocus with full-time manual override; ring-type USM drive (OpticalLimits)
Focus distance detail
Focus distance detail	Minimum focus 0.2 m	Minimum focus 0.39 m
Magnification detail
Magnification detail	Maximum 0.19×	Maximum 0.18×
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	No optical stabiliser (OpticalLimits and Digital Camera World)
Design
Dust and moisture resistant
Dust and moisture resistant	Yes	Yes
Filter diameter
Filter diameter	67 mm	95 mm
Maximum diameter
Maximum diameter	76.5 mm	103.8 mm
Length
Length	99.3 mm	139.8 mm
Weight
Weight	519 g (better)	1,430 g
Controls
Controls	Electronic manual-focus, customisable control and smooth-action iris rings; iris Auto-position lock; customisable lens function button; AF/MF switch	Separate zoom, electronic manual-focus and customisable lens control rings
Zoom design
Zoom design	–	Barrel extends towards the long end of the zoom range (OpticalLimits)
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	–
Weather resistance
Weather resistance	Dust and moisture resistant construction with mount rubber seal	Dust and moisture resistant construction with front and rear fluorine coatings
Dimensions detail
Dimensions detail	Approximately 76.5 mm maximum diameter × 99.3 mm length	103.8 mm maximum diameter × 139.8 mm length with barrel retracted
Weight detail
Weight detail	Approximately 519 g lens	Approximately 1430 g lens
Lens hood
Lens hood	EW-73H hood included	EW-103 hood included
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	Lens, E-95 front cap, RF dust cap, EW-103 hood, LP1424 lens case and user manual
Release detail
Release detail	April 2025 marketed month in Canon Camera Museum	December 2018 marketed month in Canon Camera Museum