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Canon RF 14–35mm F4 L IS USM vs Canon RF 75–300mm F4–5.6

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

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CanonRF 14–35mm F4 L IS USMCanonRF 75–300mm F4–5.6
Overview
ReleasedSeptember 2021May 2025
Optics
Lens typeZoomZoom
Focal length14–35 mm75–300 mm
Maximum aperturef/4f/4–5.6
Minimum aperturef/22f/32–45
Optical constructionSixteen elements in twelve groupsThirteen elements in nine groups; Canon states the optical design is adapted from the EF 75–300mm F4–5.6 III
Coatings–Super Spectra; no fluorine coating
Aperture detail–Maximum f/4 at 75 mm and f/5.6 at 300 mm; minimum f/32 and f/45 respectively
Special elementsTwo 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–
DiaphragmNine blades with circular apertureSeven blades
Angle of view–Full-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 RF mount for full-frame and APS-C EOS R cameras; RF extenders and EF extension tubes not compatibleCanon RF mount for full-frame and APS-C EOS R cameras; 120–480 mm equivalent field of view on Canon APS-C
Teleconverter support–Not compatible with RF extenders (The-Digital-Picture)
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.2 m1.5 m
Maximum magnification0.38×0.25×
Optical stabilisationYesNo
Autofocus detailNano USM rear focusing system; full-time manual focus in One-Shot AFDC motor autofocus; no full-time manual focus override (Digital Camera World)
Focus distance detailMinimum focus 0.2 m throughout the zoom range1.5 m minimum focus; front element and focus ring rotate during focusing (Digital Camera World and The-Digital-Picture)
Magnification detailMaximum 0.38× at 35 mm0.06× at 75 mm and 0.25× at 300 mm
Stabilisation detailOptical 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/pitchNo lens optical stabilisation
Video features–Substantial focus breathing in The-Digital-Picture's test
Design
Dust and moisture resistantYes–
Filter diameter77 mm58 mm
Maximum diameter84.1 mm71.2 mm
Length99.8 mm146.1 mm
Weight540 g507 g
ControlsZoom, electronic manual-focus and customisable control rings; AF/MF and stabiliser on/off switches; automatic panning detectionManual focus and zoom rings, AF/MF switch; no custom control ring (The-Digital-Picture)
Zoom designBarrel extends towards both ends of the zoom range; minimum length near 22 mm; camera-side electronic distortion correction contributes to the compact optical designExtending zoom barrel; further extension and front rotation during focusing (Digital Camera World)
Filter detail–58 mm front thread rotates during focusing
Weather resistanceWeather-resistant seals at the mount, switches, zoom ring, focus ring and control ringCanon UK's table lists dust/moisture resistance, but Digital Camera World and The-Digital-Picture both report no weather sealing
Dimensions detailApproximately 84.1 mm maximum diameter × 99.8 mm minimum length near 22 mm; maximum length 107.9 mm at 35 mm (Canon USA specifications)71.2 mm maximum diameter × 146.1 mm retracted length
Weight detailApproximately 540 g lensApproximately 507 g lens
Lens hoodEW-83P petal hood includedOptional ET-60 hood, not included
In the boxLens, E-77 II front cap, RF dust cap, EW-83P hood, LP1219 soft case and user manualLens, E-58 II lens cap, RF dust cap and user manual
Release detailSeptember 2021 marketed month in Canon Camera MuseumMay 2025 release confirmed retrospectively by Canon's February 2026 press release and Canon Camera Museum

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