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Canon RF 20-50mm F4L IS USM PZ vs Canon RF 75–300mm F4–5.6

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 75–300mm F4–5.6
Overview
ReleasedJune 2026May 2025
Optics
Lens typeZoomZoom
Focal length20–50 mm75–300 mm
Maximum aperturef/4f/4–5.6
Minimum aperturef/22f/32–45
Optical construction13 elements in 11 groupsThirteen elements in nine groups; Canon states the optical design is adapted from the EF 75–300mm F4–5.6 III
Special elementsTwo glass-moulded aspherical and three UD elements–
CoatingsASC and Super Spectra; fluorine coating on the front elementSuper Spectra; no fluorine coating
Aperture detailConstant maximum f/4, minimum f/22 throughout the rangeMaximum f/4 at 75 mm and f/5.6 at 300 mm; minimum f/32 and f/45 respectively
DiaphragmNine aperture bladesSeven blades
Angle of viewHorizontal 84°–40°, vertical 62°–27° and diagonal 94°–46° on full frameFull-frame diagonal 32°11′–8°15′; horizontal 27°–6°50′; vertical 18°11′–4°35′
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 for full-frame and APS-C EOS R cameras; 120–480 mm equivalent field of view on Canon APS-C
Teleconverter supportCanon RF extenders not compatibleNot compatible with RF extenders (The-Digital-Picture)
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.24 m1.5 m
Maximum magnification0.33×0.25×
Optical stabilisationYesNo
Autofocus detailNano USM autofocus; full-time manual focus; maker rear-focus design retains length during focusingDC motor autofocus; no full-time manual focus override (Digital Camera World)
Focus distance detail–1.5 m minimum focus; front element and focus ring rotate during focusing (Digital Camera World and The-Digital-Picture)
Magnification detailMaker maximum magnification 0.14× at 20 mm or 0.33× at 50 mm; no AF/MF mode specified in the table0.06× at 75 mm and 0.25× at 300 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 setupNo lens optical stabilisation
Video featuresInternal multi-speed power zoom and optically suppressed focus breathing; zoom ring switches between powered and conventional manual operationSubstantial focus breathing in The-Digital-Picture's test
Design
Dust and moisture resistantYes–
Filter diameter67 mm58 mm
Maximum diameter79.9 mm71.2 mm
Length98.4 mm146.1 mm
Weight420 g507 g
ControlsCustomisable control ring, focus ring and zoom ring; PZ/MZ selector, custom button, AF/MF and stabiliser switches (Digital Camera World; ePHOTOzine)Manual focus and zoom rings, AF/MF switch; no custom control ring (The-Digital-Picture)
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 zoom barrel; further extension and front rotation during focusing (Digital Camera World)
Filter detail67 mm front screw-in filter thread58 mm front thread rotates during focusing
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 inferredCanon UK's table lists dust/moisture resistance, but Digital Camera World and The-Digital-Picture both report no weather sealing
Dimensions detailApproximately 79.9 mm maximum diameter × 98.4 mm length71.2 mm maximum diameter × 146.1 mm retracted length
Weight detailApproximately 420 g lensApproximately 507 g lens
Lens hoodES-73B; maker lists E-67 II cap, Lens Dust Cap RF and LP1219 pouch as accessoriesOptional ET-60 hood, not included
In the box–Lens, E-58 II lens cap, RF 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 wordingMay 2025 release confirmed retrospectively by Canon's February 2026 press release and Canon Camera Museum

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