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Canon RF 10–20mm F4 L IS STM vs Canon RF 14–35mm F4 L IS USM

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CanonRF 10–20mm F4 L IS STMCanonRF 14–35mm F4 L IS USM
Overview
ReleasedOctober 2023September 2021
Optics
Lens typeZoomZoom
Focal length10–20 mm14–35 mm
Maximum aperturef/4f/4
Minimum aperturef/22f/22
Optical constructionSixteen elements in twelve groups; designed for use with digital distortion correctionSixteen elements in twelve groups
Special elementsOne Super UD, three UD and three glass-moulded aspherical elements; one element is both UD and asphericalTwo UD elements, one UD aspherical element and two glass-moulded aspherical elements; Super Spectra, SWC and ASC coatings; fluorine coating on the front surface of the front element
CoatingsASC, Super Spectra and SWC coatings; front fluorine coating–
DiaphragmNine aperture bladesNine blades with circular aperture
Angle of view130°25′–94° diagonal, 121°55′–84° horizontal and 100°25′–62° vertical–
ProjectionRectilinear–
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityCanon RF mount for full-frame and APS-C EOS R camerasCanon RF mount for full-frame and APS-C EOS R cameras; RF extenders and EF extension tubes not compatible
Teleconverter supportNot compatible with Canon RF extenders–
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.25 m0.2 m
Maximum magnification0.12×0.38×
Optical stabilisationYesYes
Autofocus detailSTM autofocus optimised for smooth, near-silent focusing in stills and videoNano USM rear focusing system; full-time manual focus in One-Shot AF
Focus distance detailMinimum focus 0.25 mMinimum focus 0.2 m throughout the zoom range
Magnification detailMaximum 0.12× at 20 mm and 0.06× at 10 mmMaximum 0.38× at 35 mm
Stabilisation detailUp to five stops optical stabilisation tested with EOS R at 20 mm, or six stops coordinated stabilisation with EOS R3 at 20 mm; CIPA yaw and pitch testing. Peripheral Coordinated Control IS also compensates for peripheral blurOptical IS rated 5.5 stops with EOS R at 35 mm under CIPA, yaw/pitch; coordinated IS rated seven stops with EOS R5 at 35 mm under CIPA, yaw/pitch
Design
Dust and moisture resistantYesYes
Filter diameter–77 mm
Maximum diameter83.7 mm84.1 mm
Length112 mm99.8 mm
Weight570 g540 g
ControlsSeparate zoom, focus and customisable control rings; customisable AF stop/function buttonZoom, electronic manual-focus and customisable control rings; AF/MF and stabiliser on/off switches; automatic panning detection
Zoom design–Barrel extends towards both ends of the zoom range; minimum length near 22 mm; camera-side electronic distortion correction contributes to the compact optical design
Filter detailNo front filter thread; rear holder accepts 35 × 20 mm gelatine filters–
Weather resistanceDust and moisture resistant construction with front fluorine coatingWeather-resistant seals at the mount, switches, zoom ring, focus ring and control ring
Dimensions detail83.7 mm maximum diameter × 112 mm lengthApproximately 84.1 mm maximum diameter × 99.8 mm minimum length near 22 mm; maximum length 107.9 mm at 35 mm (Canon USA specifications)
Weight detailApproximately 570 g lensApproximately 540 g lens
Lens hoodBuilt-in lens hoodEW-83P petal hood included
In the boxLens, RF dust cap, Lens Cap 10-20, LP1219 lens case and user manualLens, E-77 II front cap, RF dust cap, EW-83P hood, LP1219 soft case and user manual
Release detailOctober 2023 marketed month in Canon Camera MuseumSeptember 2021 marketed month in Canon Camera Museum

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