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Canon RF 20-50mm F4L IS USM PZ vs Canon RF 7-14mm F2.8-3.5L FISHEYE 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 7-14mm F2.8-3.5L FISHEYE STM
Overview
ReleasedJune 2026February 2026
Optics
Lens typeZoomZoom
Focal length20–50 mm7–14 mm
Maximum aperturef/4f/2.8–3.5
Minimum aperturef/22f/22–29
Optical construction13 elements in 11 groups16 elements in 11 groups
Special elementsTwo glass-moulded aspherical and three UD elementsFive UD and two replica aspherical elements
CoatingsASC and Super Spectra; fluorine coating on the front elementThree ASC coatings and Super Spectra; fluorine coating on the front element
Aperture detailConstant maximum f/4, minimum f/22 throughout the rangef/2.8–22 at 7 mm and f/3.5–29 at 14 mm; maker minimum-aperture figures use 1/3-stop display
DiaphragmNine aperture bladesNine aperture blades
Angle of viewHorizontal 84°–40°, vertical 62°–27° and diagonal 94°–46° on full frameHorizontal 190°–149°45′, vertical 190°–99°50′ and diagonal 190°–180° on full frame
Projection–Circular 190° fisheye at 7 mm and frame-filling diagonal 180° fisheye at 14 mm on full frame; circular mode uses equidistant projection; neither is rectilinear
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 EOS R full-frame or APS-C cameras; APS-C cannot show the complete circular image and uses approximately 8.7 mm for diagonal coverage (Digital Camera World)
Teleconverter supportCanon RF extenders not compatibleCanon RF extenders not compatible
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.24 m0.15 m (autofocus)
Maximum magnification0.33×0.35× (autofocus)
Optical stabilisationYesNo
Autofocus detailNano USM autofocus; full-time manual focus; maker rear-focus design retains length during focusingLeadscrew-type STM focusing with position sensors; full-time manual focus; maker rear-focusing design maintains length during focus
Focus distance detail–Maker specifies 0.15 m throughout the 7–14 mm range in autofocus
Magnification detailMaker maximum magnification 0.14× at 20 mm or 0.33× at 50 mm; no AF/MF mode specified in the tableMaximum 0.35× at 14 mm in autofocus, measured at the image centre; do not assume identical magnification across a fisheye image
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 IS; maker separately lists compatible camera IBIS at seven stops at the centre/14 mm under CIPA-2024 conditions
Video featuresInternal multi-speed power zoom and optically suppressed focus breathing; zoom ring switches between powered and conventional manual operationCircular fisheye material can be converted to monoscopic 2D 180° VR with EOS VR Utility on supported cameras; not a stereoscopic dual-fisheye lens; conversion compatibility depends on body and recording format
Design
Dust and moisture resistantYesYes
Filter diameter67 mm–
Maximum diameter79.9 mm76.5 mm
Length98.4 mm109.4 mm
Weight420 g476 g
ControlsCustomisable control ring, focus ring and zoom ring; PZ/MZ selector, custom button, AF/MF and stabiliser switches (Digital Camera World; ePHOTOzine)Zoom, focus and customisable control rings; AF/MF switch, function button and zoom lock/limit control (Digital Camera World)
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 descriptionsInternal zoom and focus retain the same physical lens length (Amateur Photographer; Digital Camera World)
Filter detail67 mm front screw-in filter threadNo front screw-in filter thread; rear Drop-in Filter A system; supplied clear filter and optional Drop-in Variable ND Filter A or Drop-in Circular Polarizing Filter A
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 inferredDust and moisture resistant with mount gasket; Canon states attachment to a camera is needed and protection does not prevent all dust or water ingress; no waterproof/IP claim
Dimensions detailApproximately 79.9 mm maximum diameter × 98.4 mm lengthApproximately 76.5 mm maximum diameter × 109.4 mm length, excluding detachable hood
Weight detailApproximately 420 g lensApproximately 476 g lens
Lens hoodES-73B; maker lists E-67 II cap, Lens Dust Cap RF and LP1219 pouch as accessoriesDetachable EW-76; remove for circular fisheye shooting to avoid the hood entering the image (Amateur Photographer; Digital Camera World)
In the box–Drop-in clear filter included
Release detailCanon Japan's 11 June 2026 notice confirms first sale from 26 June 2026, resolving the earlier late-June launch wordingCanon Japan specifies first sale on 20 February 2026; US announcement expected availability by the end of February, rather than the same exact regional day

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