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Canon RF 20-50mm F4L IS USM PZ vs Canon RF 85mm F2 MACRO IS STM

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

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CanonRF 20-50mm F4L IS USM PZCanonRF 85mm F2 MACRO IS STM
Overview
ReleasedJune 2026October 2020
Optics
Lens typeZoomPrime
Focal length20–50 mm85 mm
Maximum aperturef/4f/2
Minimum aperturef/22f/29
Macro lens–Yes
Optical construction13 elements in 11 groups12 elements in 11 groups
Special elementsTwo glass-moulded aspherical and three UD elementsOne UD element
CoatingsASC and Super Spectra; fluorine coating on the front element–
Aperture detailConstant maximum f/4, minimum f/22 throughout the range–
DiaphragmNine aperture bladesNine blades, circular aperture
Angle of viewHorizontal 84°–40°, vertical 62°–27° and diagonal 94°–46° on full frame–
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityCanon EOS R cameras; full-frame image circle; power-zoom control from camera body or remote devices depends on compatible model and firmwareCanon RF mount, full-frame image circle
Teleconverter supportCanon RF extenders not compatible–
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.24 m0.35 m
Maximum magnification0.33×0.5×
Optical stabilisationYesYes
Autofocus detailNano USM autofocus; full-time manual focus; maker rear-focus design retains length during focusingSTM autofocus, electronic manual focus and full-time manual focusing
Focus distance detail–Minimum focusing distance 0.35 m; three-position focus limiter; barrel extends towards close focus
Magnification detailMaker maximum magnification 0.14× at 20 mm or 0.33× at 50 mm; no AF/MF mode specified in the tableMaximum 0.5× reproduction, equivalent to half life-size
Stabilisation detailMaker six-stop optical IS or combined camera/lens eight stops at centre and corners under CIPA-2024, at maximum focal length with its specified camera; not guaranteed in every shooting setupHybrid optical IS corrects angular and shift shake; five-stop optical rating on EOS R under CIPA at 85 mm, or eight stops coordinated with EOS R5 sensor IS under CIPA at 85 mm
Video featuresInternal multi-speed power zoom and optically suppressed focus breathing; zoom ring switches between powered and conventional manual operation–
Design
Dust and moisture resistantYesNo
Filter diameter67 mm67 mm
Maximum diameter79.9 mm78 mm
Length98.4 mm90.5 mm
Weight420 g500 g
ControlsCustomisable control ring, focus ring and zoom ring; PZ/MZ selector, custom button, AF/MF and stabiliser switches (Digital Camera World; ePHOTOzine)Separate customisable control ring and focus ring, focus limiter, AF/MF and IS switches
Zoom designInternal zoom/focus keeps barrel length fixed; ePHOTOzine describes conventional mechanical manual zoom, while Digital Camera World's prose calls it fly-by-wire; no silent choice between those reviewer descriptions–
Filter detail67 mm front screw-in filter thread–
Weather resistanceDust and moisture resistant with mount gasket; maker warns camera attachment is required and protection cannot prevent all dust or water ingress; no waterproof/IP rating inferredOpticalLimits and Cameralabs report no weather sealing
Dimensions detailApproximately 79.9 mm maximum diameter × 98.4 mm lengthApproximately 78 mm maximum diameter × 90.5 mm length
Weight detailApproximately 420 g lensApproximately 500 g lens
Lens hoodES-73B; maker lists E-67 II cap, Lens Dust Cap RF and LP1219 pouch as accessoriesET-77, sold separately
In the box–Lens, E-67 II front cap, RF lens dust cap and user manual kit
Release detailCanon Japan's 11 June 2026 notice confirms first sale from 26 June 2026, resolving the earlier late-June launch wordingOctober 2020 marketed month in Canon Camera Museum

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