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Canon EF 135mm f/2L USM vs Canon RF 135mm F1.8 L IS USM

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

CanonEF 135mm f/2L USMCanonRF 135mm F1.8 L IS USM
Overview
ReleasedApril 1996January 2023
Optics
Lens typePrimePrime
Focal length135 mm135 mm
Maximum aperturef/2f/1.8
Minimum aperturef/32f/22
Optical constructionTen elements in eight groupsSeventeen elements in twelve groups
Special elementsTwo UD glass elements according to Canon Camera MuseumThree UD elements
CoatingsSuper Spectra coating according to Canon UKASC and Super Spectra coatings; front-element fluorine coating
DiaphragmEight bladesNine blades with circular aperture
Angle of view15° horizontal, 10° vertical and 18° diagonal according to Canon UKApproximately 18° diagonal
Mount and compatibility
MountsCanon EFCanon RF
Image circleFull frameFull frame
CompatibilityCanon EF full-frame and APS-C camerasCanon RF mount for full-frame and APS-C EOS R cameras
Teleconverter supportCanon's manual confirms EF1.4X II gives 189 mm f/2.8 and EF2X II gives 270 mm f/4Canon RF 1.4× and 2× extenders not compatible
Adaptor supportCanon UK confirms EOS M use with the EF-EOS M Mount Adapter–
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.9 m0.7 m
Maximum magnification0.19×0.26×
Optical stabilisationNoYes
Autofocus detailRing USM; mechanical full-time manual focus after One Shot AF while holding the shutter halfway according to Canon's manualNano USM; full-time manual focusing supported in One Shot AF and Servo AF on compatible EOS R-series cameras
Focus distance detailInternal focusing with constant length and a non-rotating filter thread according to Photozone and ePHOTOzineMinimum focus 0.70 m; no distance limiter switch
Magnification detailEF12 II provides 0.09–0.29× and EF25 II 0.20–0.41× according to Canon UKMaximum 0.26×; approximately 135 × 91 mm field of view at minimum focus
Stabilisation detailNo optical stabilisation according to ePHOTOzine's exact-model specificationUp to 5.5 stops optical IS with EOS R; up to 8 stops coordinated with EOS R3 IBIS, under CIPA yaw/pitch testing
Video features–Focus breathing correction available on compatible cameras
Design
Dust and moisture resistantNoYes
Filter diameter72 mm82 mm
Maximum diameter82.5 mm89.2 mm
Length112 mm130.3 mm
Weight750 g935 g
ControlsFocus ring, AF/MF switch, distance window and 0.9 m–infinity or 1.6 m–infinity limiter according to Canon's manualSeparate electronic manual-focus and customisable control rings; two customisable lens function buttons default to AF stop; AF/MF and stabiliser switches
Weather resistanceNo weather sealing according to ePHOTOzine's exact-model testDust and moisture resistant construction with rubber mount seal; front-element fluorine coating
Dimensions detail82.5 mm diameter × 112 mm length, excluding caps according to Canon's manualApproximately 89.2 mm maximum diameter × 130.3 mm length
Weight detail750 g for the lens only according to Canon's manualApproximately 935 g lens
Lens hoodSupplied reversible ET-78II hoodET-88B hood included (Canon UK store)
In the boxLens, E-72U front cap, Lens Dust Cap E, LP1219 case, ET-78II hood and user manual according to Canon UK's box listLens, ET-88B hood, LP1319 lens case, E-82 II front cap and RF dust cap (Canon UK store)
Release detailCanon Camera Museum records April 1996 marketingJanuary 2023 marketed month in Canon Camera Museum

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