Canon EF 100mm f/2.8 Macro USM vs Canon RF 100mm F2.8 L Macro IS USM

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EF 100mm f/2.8 Macro USM compared with RF 100mm F2.8 L Macro IS USM

	CanonEF 100mm f/2.8 Macro USM	CanonRF 100mm F2.8 L Macro IS USM
Overview
Released
Released	March 2000	July 2021
Optics
Lens type
Lens type	Prime	Prime
Focal length
Focal length	100 mm	100 mm
Maximum aperture
Maximum aperture	f/2.8	f/2.8
Minimum aperture
Minimum aperture	f/32	f/32
Macro lens
Macro lens	Yes	Yes
Optical construction
Optical construction	Twelve elements in eight groups with three-group floating focusing	Seventeen elements in thirteen groups
Coatings
Coatings	–	Super Spectra coating and front-element fluorine coating
Aperture detail
Aperture detail	–	Maximum f/2.8 at infinity; effective f-number becomes f/6.6 at 1.4× magnification according to the manual
Diaphragm
Diaphragm	Eight blades; Canon UK's store describes a circular aperture	Nine aperture blades
Angle of view
Angle of view	24° diagonal, 20° horizontal and 14° vertical according to Canon's manual	–
Mount and compatibility
Mounts
Mounts	Canon EF	Canon RF
Image circle
Image circle	Full frame	Full frame
Compatibility
Compatibility	Canon EF cameras with full-frame or APS-C sensors	Canon RF mount for full-frame and APS-C EOS R cameras; EF12 II and EF25 II extension tubes not compatible
Teleconverter support
Teleconverter support	Canon's manual excludes Extender EF1.4X II and EF2X II	Canon extenders not compatible
Focus and stabilisation
Autofocus
Autofocus	Yes	Yes
Minimum focus distance
Minimum focus distance	0.31 m	0.26 m
Maximum magnification
Maximum magnification	1×	1.4×
Optical stabilisation
Optical stabilisation	No	Yes
Autofocus detail
Autofocus detail	Ring USM; full-time manual adjustment after One Shot AF while holding the shutter half-pressed according to Canon's manual	Dual Nano USM; electronic manual focusing with full-time manual override in One Shot AF when enabled in camera settings
Focus distance detail
Focus distance detail	Internal focusing keeps the length constant and the front ring stationary; focus limiter selects 0.31 m to infinity or 0.48 m to infinity	Minimum 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 m
Magnification detail
Magnification detail	Life-size 1× reproduction without attachments; Canon Camera Museum gives 149 mm working distance at life-size, distinct from 0.31 m image-plane focusing distance	Maximum 1.4×; approximately 25 × 17 mm field of view at minimum focus
Stabilisation detail
Stabilisation detail	No optical stabilisation according to The Digital Picture's exact-model specification table	Hybrid 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 testing
Design
Dust and moisture resistant
Dust and moisture resistant	No	Yes
Filter diameter
Filter diameter	58 mm	67 mm
Maximum diameter
Maximum diameter	79 mm	81.5 mm
Length
Length	119 mm	148 mm
Weight
Weight	600 g (better)	685 g
Controls
Controls	AF/MF switch, focus-range switch, focus ring, distance window and reproduction-ratio scale	Manual-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 m
Weather resistance
Weather resistance	No weather sealing according to The Digital Picture's exact-model specification table	Dust and moisture resistant construction; front fluorine coating
Dimensions detail
Dimensions detail	Canon Camera Museum gives 79 mm diameter × 119 mm length and 600 g; Canon's Japanese manual instead lists 78.6 × 118.6 mm and 580 g. Both describe the same model; no separately marketed revision is identified	Approximately 81.5 mm maximum diameter × 148 mm length
Weight detail
Weight detail	Headline weight follows Canon Camera Museum's historical specification; the manual's 580 g figure is lens-only, excluding caps and optional tripod ring	Approximately 685 g lens only, excluding caps and optional tripod mount
Tripod mount
Tripod mount	Optional Ring-type Tripod Mount B (B), with the adaptor specifically for this lens, according to Canon's manual	Tripod mount ring E (B) with dedicated adapter sold separately
Lens hood
Lens hood	ET-67; optional according to the two reviews	ET-73C hood included
In the box
In the box	–	Lens, E-67 II front cap, RF dust cap, ET-73C hood, LP1222 lens case and user manual kit (Canon UK store)
Release detail
Release detail	Canon Camera Museum records March 2000 marketing and explicitly says this replaces the earlier EF 100mm f/2.8 Macro. Its predecessor year of 1991 conflicts with the original lens's own Museum table, which gives April 1990	July 2021 marketed month in Canon Camera Museum