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Canon RF 45mm F1.2 STM vs Canon RF 800mm F11 IS STM

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

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CanonRF 45mm F1.2 STMCanonRF 800mm F11 IS STM
Overview
ReleasedNovember 2025July 2020
Optics
Lens typePrimePrime
Focal length45 mm800 mm
Maximum aperturef/1.2f/11
Minimum aperturef/16f/11
Optical constructionNine elements in seven groupsEleven elements in eight 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 frame2°35′ horizontal, 1°40′ vertical and 3°05′ 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; EOS R, Ra and RP require compatible firmware
Teleconverter supportCanon RF extenders not compatibleRF 1.4× gives 1120 mm at f/16 and 0.19× maximum magnification; RF 2× gives 1600 mm at f/22 and 0.28×. Canon lists autofocus and stabilisation as supported with both; performance depends on camera and light levels
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.45 m6 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 states approximately 40% horizontal × 60% vertical AF coverage in its original EOS R compatibility notes
Focus distance detailMinimum focusing distance 0.45 m; Canon does not separately specify AF/MF distancesMinimum focus 6 m; full-range or 20 m–infinity focus limiter (Cameralabs)
Magnification detail–Maximum 0.14× without an extender
Stabilisation detailNo optical image stabilisation (Canon USA)Up to four stops optical stabilisation under CIPA testing with EOS R
Design
Dust and moisture resistantNoNo
Filter diameter67 mm95 mm
Maximum diameter78 mm101.6 mm
Length75 mm281.8 mm
Weight346 g1,260 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 resistance; no rubber mount seal (Cameralabs)
Dimensions detailApproximately 78 mm maximum diameter × 75 mm length101.6 mm maximum diameter; 281.8 mm retracted length or 351.8 mm when extended for shooting
Weight detailApproximately 346 g lensApproximately 1260 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 CanonOptional ET-101 hood; not included
In the boxFront and rear lens caps (Amateur Photographer); hood not includedLens, E-95 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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