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Canon RF 100mm F2.8 L Macro IS USM vs Canon RF 20mm F1.4 L VCM

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CanonRF 100mm F2.8 L Macro IS USMCanonRF 20mm F1.4 L VCM
Overview
ReleasedJuly 2021April 2025
Optics
Lens typePrimePrime
Focal length100 mm20 mm
Maximum aperturef/2.8f/1.4
Minimum aperturef/32f/16
Macro lensYes–
Optical constructionSeventeen elements in thirteen groupsFifteen elements in eleven groups
Special elements–One Super UD, two UD, one BR and two glass-moulded aspherical elements; ASC, SWC and Super Spectra coatings; front fluorine coating
CoatingsSuper Spectra coating and front-element fluorine coating–
Aperture detailMaximum f/2.8 at infinity; effective f-number becomes f/6.6 at 1.4× magnification according to the manual–
DiaphragmNine aperture bladesEleven blades with circular aperture
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityCanon RF mount for full-frame and APS-C EOS R cameras; EF12 II and EF25 II 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
Teleconverter supportCanon extenders not compatible–
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.26 m0.2 m
Maximum magnification1.4×0.19×
Optical stabilisationYesNo
Autofocus detailDual Nano USM; electronic manual focusing with full-time manual override in One Shot AF when enabled in camera settingsRear focusing system driven by a VCM motor
Focus distance detailMinimum focus 0.26 m from the imaging plane; 8.6 cm working distance from the lens front; limiter settings full, 0.5 m to infinity or 0.26–0.5 mMinimum focus 0.2 m
Magnification detailMaximum 1.4×; approximately 25 × 17 mm field of view at minimum focusMaximum 0.19×
Stabilisation detailHybrid IS rated up to 5 stops with EOS R; 2 stops at 1.0× under Canon test standards; up to 8 stops coordinated with EOS R5 IBIS under CIPA yaw/pitch testingNo 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 resistantYesYes
Filter diameter67 mm67 mm
Maximum diameter81.5 mm76.5 mm
Length148 mm99.3 mm
Weight685 g519 g
ControlsManual-focus and customisable lens control rings; AF/MF, stabiliser and focus limiter switches; Spherical Aberration control ring with central-position lock. SA adjustment changes bokeh, soft focus, angle of view and exposure; its effect disappears at 0.26 mElectronic 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
Weather resistanceDust and moisture resistant construction; front fluorine coatingDust and moisture resistant construction with mount rubber seal
Dimensions detailApproximately 81.5 mm maximum diameter × 148 mm lengthApproximately 76.5 mm maximum diameter × 99.3 mm length
Weight detailApproximately 685 g lens only, excluding caps and optional tripod mountApproximately 519 g lens
Tripod mountTripod mount ring E (B) with dedicated adapter sold separately–
Lens hoodET-73C hood includedEW-73H hood included
In the boxLens, E-67 II front cap, RF dust cap, ET-73C hood, LP1222 lens case and user manual kit (Canon UK store)Lens, E-67 II front cap, RF dust cap, EW-73H hood, LP1219 case, rear filter holder and user manual
Release detailJuly 2021 marketed month in Canon Camera MuseumApril 2025 marketed month in Canon Camera Museum

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