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Canon RF 20-50mm F4L IS USM PZ vs Canon RF 24–240mm F4–6.3 IS USM

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 24–240mm F4–6.3 IS USM
Overview
ReleasedJune 2026September 2019
Optics
Lens typeZoomZoom
Focal length20–50 mm24–240 mm
Maximum aperturef/4f/4–6.3
Minimum aperturef/22f/22–36
Optical construction13 elements in 11 groups21 elements in 15 groups
Special elementsTwo glass-moulded aspherical and three UD elements–
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/36 at 240 mm in Canon Japan specifications; UK table lists 22–38 (36); clickless one-eighth-stop aperture control for movies
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 not compatible
Teleconverter supportCanon RF extenders not compatible–
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.24 m0.5 m
Maximum magnification0.33×0.26×
Optical stabilisationYesYes
Autofocus detailNano USM autofocus; full-time manual focus; maker rear-focus design retains length during focusingNano USM autofocus and electronic manual focusing
Focus distance detail–Minimum 0.5 m at 24 mm, per Canon; 0.78 m at 240 mm reported by Cameralabs
Magnification detailMaker maximum magnification 0.14× at 20 mm or 0.33× at 50 mm; no AF/MF mode specified in the tableMaximum 0.26× at 240 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 five stops with EOS R at 240 mm under CIPA; Dynamic IS for movies, reported by OpticalLimits
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 mm72 mm
Maximum diameter79.9 mm80.4 mm
Length98.4 mm122.5 mm
Weight420 g750 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 selector, zoom ring with lock at 24 mm 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 descriptionsExtending two-section barrel; lockable zoom ring with 100° rotation
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 dust or moisture resistance
Dimensions detailApproximately 79.9 mm maximum diameter × 98.4 mm lengthApproximately 80.4 mm maximum diameter × 122.5 mm length, retracted
Weight detailApproximately 420 g lensApproximately 750 g lens
Lens hoodES-73B; maker lists E-67 II cap, Lens Dust Cap RF and LP1219 pouch as accessoriesEW-78F hood and LP1219 pouch, neither bundled
In the box–Lens, E-72 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 wordingSeptember 2019 marketed month in Canon Camera Museum

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