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Canon RF 14mm F1.4L VCM vs Canon RF 400mm F2.8L IS USM

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

Better figure, where one is clearly better

CanonRF 14mm F1.4L VCMCanonRF 400mm F2.8L IS USM
Overview
ReleasedFebruary 2026July 2021
Optics
Lens typePrimePrime
Focal length14 mm400 mm
Maximum aperturef/1.4f/2.8
Minimum aperturef/16f/32
Optical construction18 elements in 13 groupsSeventeen elements in thirteen groups
Special elementsOne fluorite, one UD, one BR and three glass-moulded aspherical elementsTwo fluorite elements and one Super UD element
CoatingsTwo ASC coatings, SWC and Super Spectra; fluorine coating on the front elementSuper Spectra and ASC; fluorine coatings on front and rear elements
Aperture detailf/1.4–16; iris ring supports stepless aperture control in video, with stills compatibility dependent on camera modelMaximum f/2.8; minimum f/32
Diaphragm11 circular aperture bladesNine blades
Angle of view104° horizontal, 81° vertical and 114° diagonal on full frameFull-frame diagonal 6°10′
ProjectionRectilinear ultra-wide design–
Mount and compatibility
MountsCanon RFCanon RF
Image circleFull frameFull frame
CompatibilityCanon EOS R cameras; full-frame image circle; iris-ring functions depend on the camera and firmwareCanon RF mount for full-frame and APS-C EOS R cameras
Teleconverter supportCanon RF extenders not compatibleCompatible with RF 1.4× and RF 2× extenders
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.24 m2.5 m
Maximum magnification0.11×0.17×
Optical stabilisationNoYes
Autofocus detailVoice Coil Motor autofocus; electronic manual focus ring; maker rear-focus design maintains lens length during focusingRing-type USM with Power Doubled Focus Drive on compatible cameras; full-time manual override
Focus distance detail–2.5 m minimum focus; two stored focus presets and variable-speed manual focusing
Magnification detail–0.17× maximum magnification
Stabilisation detailNo lens optical IS; maker lists camera IBIS CIPA-2024 performance of 6.5 stops at the centre and 2.5 at the corners, subject to the compatible camera/test conditionsCanon rates optical IS at 5.5 stops with EOS R or EOS R5 under CIPA yaw/pitch conditions; modes 1, 2 and 3
Video featuresStepless iris ring; Canon Japan identifies EOS R1/EOS R5 Mark II stills iris-ring support; the US launch also names EOS R6 Mark III; do not assume the same support on every EOS R bodyAperture control in 1/8-stop increments; power-focus mode for controlled focus transitions
Design
Dust and moisture resistantYesYes
Filter diameter–52 mm
Maximum diameter76.5 mm163 mm
Length112 mm367 mm
Weight578 g2,890 g
ControlsCustomisable control ring, electronic focus ring, iris ring with Auto-position lock, AF/MF switch and custom function button (controls confirmed by Digital Camera World)Focus ring, playback ring, focus-preset controls and customisable lens-function buttons; no custom control ring (Cameralabs)
Filter detailNo front screw-in filter thread; rear gelatin-filter holder for 36.7 × 29.4 mm filters52 mm drop-in screw-type filter holder 52 (WIII), supplied with a clear Protect filter; optional circular polariser and gelatin holder
Weather resistanceDust and moisture resistant structure with mount gasket; Canon states resistance requires attachment to a camera and cannot prevent all dust or water ingress; no IP rating inferredDust- and moisture-resistant construction with heat-reflective white paint
Dimensions detailApproximately 76.5 mm maximum diameter × 112 mm length; integral hood163 mm maximum diameter × 367 mm length
Weight detailApproximately 578 g lensApproximately 2,890 g lens
Tripod mount–Rotating built-in foot with 1/4-inch and 3/8-inch threads; no Arca-Swiss dovetail (Cameralabs)
Lens hoodBuilt into the lens barrel; maker lists lens cap 14B, Lens Dust Cap RF and pouch LP1219 as accessoriesET-155 (WIII) included; shorter ET-155B optional
In the box–Lens, RF dust cap, drop-in screw-type filter holder 52 (WIII) with 52 mm Protect filter, E-180E soft cap, ET-155 (WIII) hood, LS400 soft case, Lens Wide Strap B and user manual
Release detailCanon Japan specifies first sale on 20 February 2026; US announcement expected availability by the end of February, rather than the same exact regional dayJuly 2021 Japanese first release, confirmed retrospectively by Canon's March 2022 announcement and Camera Museum

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