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Canon RF 16mm F2.8 STM 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 16mm F2.8 STMCanonRF 75–300mm F4–5.6
Overview
ReleasedOctober 2021May 2025
Optics
Lens typePrimeZoom
Focal length16 mm75–300 mm
Maximum aperturef/2.8f/4–5.6
Minimum aperturef/22f/32–45
Optical constructionNine elements in seven 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 elementsOne aspherical element–
DiaphragmSeven bladesSeven 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, full-frame image circle; 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 distance0.13 m1.5 m
Maximum magnification0.26×0.25×
Optical stabilisationNoNo
Autofocus detailSTM autofocus and electronic manual focusingDC motor autofocus; no full-time manual focus override (Digital Camera World)
Focus distance detailMinimum focusing distance 0.13 m; inner barrel extends when powered and during focusing1.5 m minimum focus; front element and focus ring rotate during focusing (Digital Camera World and The-Digital-Picture)
Magnification detailMaximum 0.26× reproduction0.06× at 75 mm and 0.25× at 300 mm
Stabilisation detailNo optical IS, per OpticalLimits and Cameralabs; compatible camera stabilisation is separateNo lens optical stabilisation
Video features–Substantial focus breathing in The-Digital-Picture's test
Design
Dust and moisture resistantNo–
Filter diameter43 mm58 mm
Maximum diameter69.2 mm71.2 mm
Length40.2 mm146.1 mm
Weight165 g507 g
ControlsCombined focus/control ring and function switch; Cameralabs notes manual focus also needs selecting in camera settingsManual focus and zoom rings, AF/MF switch; no custom control ring (The-Digital-Picture)
Zoom design–Extending zoom barrel; further extension and front rotation during focusing (Digital Camera World)
Filter detailOnly one filter at a time; Canon 250D/500D close-up lenses and PL-C B circular polariser not compatible58 mm front thread rotates during focusing
Weather resistanceOpticalLimits and Cameralabs report no weather sealingCanon UK's table lists dust/moisture resistance, but Digital Camera World and The-Digital-Picture both report no weather sealing
Dimensions detailApproximately 69.2 mm maximum diameter × 40.2 mm length, retracted71.2 mm maximum diameter × 146.1 mm retracted length
Weight detailApproximately 165 g lensApproximately 507 g lens
Lens hoodEW-65C, sold separatelyOptional ET-60 hood, not included
In the boxLens, EF-43 front cap, RF lens dust cap and user manual kitLens, E-58 II lens cap, RF dust cap and user manual
Release detailOctober 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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