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Canon RF 600mm F11 IS STM vs Canon RF 85mm F1.4L VCM

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

Better figure, where one is clearly better

CanonRF 600mm F11 IS STMCanonRF 85mm F1.4L VCM
Overview
ReleasedJuly 2020September 2025
Optics
Lens typePrimePrime
Focal length600 mm85 mm
Maximum aperturef/11f/1.4
Minimum aperturef/11f/16
Optical constructionTen elements in seven groups14 elements in 10 groups
Special elementsGapless dual-layer diffractive optical elementOne UD and one glass-moulded aspherical element
Coatings–ASC and Super Spectra; fluorine coating on the front element
Aperture detailFixed f/11 aperture; cannot be stopped downf/1.4–16 with stepless iris ring; no click-stop option (Amateur Photographer)
DiaphragmNo aperture blades11 circular aperture blades
Angle of view–24° horizontal, 16° vertical and 28°30′ diagonal on full frame
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityCanon RF mount for full-frame and APS-C EOS R camerasCanon EOS R cameras; full-frame image circle; stills iris-ring support is body/firmware dependent
Teleconverter supportCompatible 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 levelsCanon RF extenders not compatible
Focus and stabilisation
AutofocusYesYes
Minimum focus distance4.5 m0.75 m
Maximum magnification0.14×0.12×
Optical stabilisationYesNo
Autofocus detailLead-screw STM autofocus; Canon Camera Museum states a focus area of 40% horizontal × 60% vertical for the original supported EOS R bodiesVoice Coil Motor autofocus; electronic manual focus; maker notes movement/noise in unpowered internal VCM components is normal
Focus distance detailMinimum focus 4.5 m; full-range or 12 m–infinity focus limiter (Cameralabs and Dustin Abbott)–
Magnification detailMaximum 0.14×–
Stabilisation detailUp to five stops optical stabilisation under CIPA testing with EOS RNo lens optical IS; maker separately lists camera IBIS CIPA-2024 performance of eight stops at the centre and seven at the corners under its camera/test conditions
Video features–Optically suppressed focus breathing and stepless iris control; UK maker footnote excludes stills iris-ring operation on EOS R/RP/Ra/R3/R5/R6/R6 Mark II/R7/R8/R10/R50/R100/R5 C even with current firmware
Design
Dust and moisture resistantNoYes
Filter diameter82 mm67 mm
Maximum diameter93 mm76.5 mm
Length199.5 mm99.3 mm
Weight930 g636 g
ControlsSeparate manual focus and customisable control rings; focus limiter, AF/MF and stabiliser switchesCustomisable control ring, focus ring, iris ring with Auto-position lock, function button and AF/MF switch (Amateur Photographer)
Filter detail–67 mm front screw-in filter thread; compatible Canon 67 mm Protect and PL-C B circular polarising filters
Zoom designPrime lens with a retracting storage barrel; extend and lock the barrel before shooting–
Weather resistanceNo dust or moisture sealing, including no rubber mount seal (Cameralabs)Dust and moisture resistant with mount gasket; Canon states protection requires attachment to a camera and cannot prevent all dust or water ingress; no waterproof/IP rating inferred
Dimensions detail93 mm maximum diameter; 199.5 mm retracted length or 269.5 mm when extended for shootingApproximately 76.5 mm maximum diameter × 99.3 mm length
Weight detailApproximately 930 g lensApproximately 636 g lens
Tripod mountBuilt-in tripod mounting thread; no rotating collar (Cameralabs)–
Lens hoodET-88B hood sold separately (Dustin Abbott)ET-73C; maker lists E-67 II cap, Lens Dust Cap RF and LP1219 pouch as accessories
In the boxLens, E-82II cap, RF dust cap and user manual kit–
Release detailJuly 2020 marketed month in Canon Camera MuseumCanon Japan specifies first sale on 27 September 2025; no UK first-sale day inferred

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