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Canon RF 20-50mm F4L IS USM PZ vs Canon RF 24–50mm F4.5–6.3 IS STM

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

Better figure, where one is clearly better

CanonRF 20-50mm F4L IS USM PZCanonRF 24–50mm F4.5–6.3 IS STM
Overview
ReleasedJune 2026April 2023
Optics
Lens typeZoomZoom
Focal length20–50 mm24–50 mm
Maximum aperturef/4f/4.5–6.3
Minimum aperturef/22f/22–32
Optical construction13 elements in 11 groupsEight elements in eight groups
Special elementsTwo glass-moulded aspherical and three UD elementsTwo plastic-moulded aspherical elements; Super Spectra coating; no fluorine coating
CoatingsASC and Super Spectra; fluorine coating on the front element–
Aperture detailConstant maximum f/4, minimum f/22 throughout the rangeMinimum f/22 at 24 mm and f/32 at 50 mm
DiaphragmNine aperture bladesSeven 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 firmwareFull-frame Canon RF mount; compatible with APS-C EOS R bodies; RF extenders and EF extension tubes not compatible
Teleconverter supportCanon RF extenders not compatible–
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.24 m0.3 m
Maximum magnification0.33×0.19×
Optical stabilisationYesYes
Autofocus detailNano USM autofocus; full-time manual focus; maker rear-focus design retains length during focusingLead-screw STM autofocus
Focus distance detail–Minimum 0.30 m at 24 mm and 0.35 m at 50 mm
Magnification detailMaker maximum magnification 0.14× at 20 mm or 0.33× at 50 mm; no AF/MF mode specified in the tableMaximum 0.11× at 24 mm and 0.19× at 50 mm
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 setupOptical IS rated 4.5 stops on EOS R at 50 mm under CIPA, yaw/pitch; coordinated IS rated seven stops on EOS R5 at 50 mm in the UK specifications and on EOS R3 in Camera Museum, under CIPA, yaw/pitch
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 mm58 mm
Maximum diameter79.9 mm69.6 mm
Length98.4 mm58 mm
Weight420 g210 g
ControlsCustomisable control ring, focus ring and zoom ring; PZ/MZ selector, custom button, AF/MF and stabiliser switches (Digital Camera World; ePHOTOzine)Combined focus/control ring with AF/Control/MF selector, zoom ring and IS on/off switch
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 descriptionsRetractable barrel; lens must be extended for shooting
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 inferredNo weather seals, reported by Dustin Abbott and Digital Camera World
Dimensions detailApproximately 79.9 mm maximum diameter × 98.4 mm lengthApproximately 69.6 mm maximum diameter × 58 mm length, retracted
Weight detailApproximately 420 g lensApproximately 210 g lens
Lens hoodES-73B; maker lists E-67 II cap, Lens Dust Cap RF and LP1219 pouch as accessoriesEW-63C hood and LP1014 pouch, neither bundled
In the box–Lens, E-58 II front cap, RF lens dust cap and user manual
Release detailCanon Japan's 11 June 2026 notice confirms first sale from 26 June 2026, resolving the earlier late-June launch wordingApril 2023 marketed month in Canon Camera Museum

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