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Canon RF 45mm F1.2 STM vs Canon RF 600mm F11 IS STM

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

Better figure, where one is clearly better

CanonRF 45mm F1.2 STMCanonRF 600mm F11 IS STM
Overview
ReleasedNovember 2025July 2020
Optics
Lens typePrimePrime
Focal length45 mm600 mm
Maximum aperturef/1.2f/11
Minimum aperturef/16f/11
Optical constructionNine elements in seven groupsTen elements in seven groups
Special elementsOne plastic-moulded aspherical element (Canon USA)Gapless dual-layer diffractive optical element
CoatingsSuper Spectra coating–
Aperture detailf/1.2–16Fixed f/11 aperture; cannot be stopped down
DiaphragmNine aperture bladesNo aperture blades
Angle of view43°35′ horizontal, 29°50′ vertical and 51°20′ diagonal on full frame–
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityCanon EOS R cameras; full-frame image circleCanon RF mount for full-frame and APS-C EOS R cameras
Teleconverter supportCanon RF extenders not compatibleCompatible with RF extenders; 840 mm at f/16 with RF 1.4× or 1200 mm at f/22 with RF 2× (Cameralabs and Dustin Abbott). Autofocus performance depends on camera and light levels
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.45 m4.5 m
Maximum magnification0.13×0.14×
Optical stabilisationNoYes
Autofocus detailGear-type STM autofocus with magnetic focus-position detection; full-time electronic manual focusLead-screw STM autofocus; Canon Camera Museum states a focus area of 40% horizontal × 60% vertical for the original supported EOS R bodies
Focus distance detailMinimum focusing distance 0.45 m; Canon does not separately specify AF/MF distancesMinimum focus 4.5 m; full-range or 12 m–infinity focus limiter (Cameralabs and Dustin Abbott)
Magnification detail–Maximum 0.14×
Stabilisation detailNo optical image stabilisation (Canon USA)Up to five stops optical stabilisation under CIPA testing with EOS R
Design
Dust and moisture resistantNoNo
Filter diameter67 mm82 mm
Maximum diameter78 mm93 mm
Length75 mm199.5 mm
Weight346 g930 g
ControlsSeparate focus and clickable control rings; AF/MF switch; no iris ring or lens function button (Canon USA)Separate manual focus and customisable control rings; focus limiter, AF/MF and stabiliser switches
Zoom design–Prime lens with a retracting storage barrel; extend and lock the barrel before shooting
Filter detail67 mm front screw-in filter thread–
Weather resistanceNo dust or weather resistant construction (Canon USA)No dust or moisture sealing, including no rubber mount seal (Cameralabs)
Dimensions detailApproximately 78 mm maximum diameter × 75 mm length93 mm maximum diameter; 199.5 mm retracted length or 269.5 mm when extended for shooting
Weight detailApproximately 346 g lensApproximately 930 g lens
Tripod mount–Built-in tripod mounting thread; no rotating collar (Cameralabs)
Lens hoodOptional ES-73B hood and LP1116 case; E-67 II front cap and Lens Dust Cap RF listed by CanonET-88B hood sold separately (Dustin Abbott)
In the boxFront and rear lens caps (Amateur Photographer); hood not includedLens, E-82II cap, RF dust cap and user manual kit
Release detailCanon Japan's 14 November 2025 notice confirms first sale on 28 November 2025; Photography Blog instead reports availability from 20 November without a matching regional maker day, so no UK date is inferredJuly 2020 marketed month in Canon Camera Museum

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