Canon · RF

RF 100mm F2.8 L Macro IS USM

Released July 2021

A full-frame macro prime for EOS R cameras with 1.4× maximum magnification, Hybrid IS, Dual Nano USM autofocus and a Spherical Aberration control ring for changing bokeh and soft focus.

Mount
Canon RF
Focal length
100 mm
Max aperture
f/2.8
Stabilisation
Yes
Weight
685 g

What reviewers say

Both reviews praise sharpness at f/2.8, fast quiet autofocus and smooth background blur, while noting close-range focus shift and treating the SA adjustment as a niche effect. Cameralabs measured less stabilisation than Canon claims on its EOS R5. OpticalLimits highlights strong uncorrected vignetting and substantial focus breathing, despite good overall optical performance.

From cameralabs.com, cameralabs.com and opticallimits.com

Optics

Lens type
Prime
Focal length
100 mm
Maximum aperture
f/2.8
Minimum aperture
f/32
Macro lens
Yes
Optical construction
Seventeen elements in thirteen groups
Coatings
Super Spectra coating and front-element fluorine coating
Aperture detail
Maximum f/2.8 at infinity; effective f-number becomes f/6.6 at 1.4× magnification according to the manual
Diaphragm
Nine aperture blades

Mount and compatibility

Mounts
Canon RF
Image circle
Full frame
Compatibility
Canon RF mount for full-frame and APS-C EOS R cameras; EF12 II and EF25 II extension tubes not compatible
Teleconverter support
Canon extenders not compatible

Focus and stabilisation

Autofocus
Yes
Minimum focus distance
0.26 m
Maximum magnification
1.4×
Optical stabilisation
Yes
Autofocus detail
Dual Nano USM; electronic manual focusing with full-time manual override in One Shot AF when enabled in camera settings
Focus distance detail
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
Maximum 1.4×; approximately 25 × 17 mm field of view at minimum focus
Stabilisation detail
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
Yes
Filter diameter
67 mm
Maximum diameter
81.5 mm
Length
148 mm
Weight
685 g
Controls
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
Dust and moisture resistant construction; front fluorine coating
Dimensions detail
Approximately 81.5 mm maximum diameter × 148 mm length
Weight detail
Approximately 685 g lens only, excluding caps and optional tripod mount
Tripod mount
Tripod mount ring E (B) with dedicated adapter sold separately
Lens hood
ET-73C hood included
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
July 2021 marketed month in Canon Camera Museum

Pros and cons

Pros

  • 1.4× maximum macro magnification
  • Optical Hybrid IS
  • Adjustable Spherical Aberration control

Cons

  • 148 mm lens length
  • Extenders not compatible
  • Stabilisation effectiveness reduces at closer distances

Closest rivals

Model
MountFocal lengthMax apertureStabilisationWeightReleased
Canon RF85 mmf/2Yes500 gOct 2020
Canon RF135 mmf/1.8Yes935 gJan 2023
Canon RF85 mmf/1.2No1,195 gJun 2019

Sources

  1. canon.co.uk/lenses/rf-100mm-f2-8l-macro-is-usm/specifications
  2. canon.co.uk/store/canon-rf-100mm-f2-8l-macro-is-usm-lens/4514C005
  3. global.canon/en/c-museum/product/rf508.html
  4. downloads.canon.com/nw/lens/rf100mm-f2.8lmacrousm/RF100mm_F2.8L_MACRO_specifica…
  5. gdlp01.c-wss.com/gds/6/0300042036/02/rf100f28l-macro-is-im2-eng.pdf
  6. cameralabs.com/canon-rf-100mm-f2-8l-macro-is-usm-review
  7. cameralabs.com/canon-rf-100mm-f2-8l-macro-is-usm-review/3
  8. opticallimits.com/canon/canon-rf-100mm-f-2-8-l-usm-is-macro

Photo: Canon Asia Photo Library; official press archive member RF100mm f2.8L IS USM Front Slant w Tripod Ring.jpg; complete supplied canvas and white background retained.

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