Request a product

Canon RF 28mm F2.8 STM 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 28mm F2.8 STMCanonRF 7-14mm F2.8-3.5L FISHEYE STM
Overview
ReleasedJuly 2023February 2026
Optics
Lens typePrimeZoom
Focal length28 mm7–14 mm
Maximum aperturef/2.8f/2.8–3.5
Minimum aperturef/22f/22–29
Optical constructionEight elements in six groups16 elements in 11 groups
Special elementsThree plastic-moulded aspherical elements; Super Spectra coating; no fluorine coatingFive UD and two replica aspherical elements
Coatings–Three ASC coatings and Super Spectra; fluorine coating on the front element
Aperture detail–f/2.8–22 at 7 mm and f/3.5–29 at 14 mm; maker minimum-aperture figures use 1/3-stop display
DiaphragmSeven blades, circular apertureNine aperture blades
Angle of view–Horizontal 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 RF mount, full-frame image circle; RF extenders not compatibleCanon 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 support–Canon RF extenders not compatible
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.23 m0.15 m (autofocus)
Maximum magnification0.17×0.35× (autofocus)
Optical stabilisationNoNo
Autofocus detailSTM autofocus and electronic manual focusingLeadscrew-type STM focusing with position sensors; full-time manual focus; maker rear-focusing design maintains length during focus
Focus distance detailMinimum focusing distance 0.23 mMaker specifies 0.15 m throughout the 7–14 mm range in autofocus
Magnification detailMaximum 0.17× reproductionMaximum 0.35× at 14 mm in autofocus, measured at the image centre; do not assume identical magnification across a fisheye image
Stabilisation detailNo lens optical IS; compatible camera stabilisation is separateNo lens optical IS; maker separately lists compatible camera IBIS at seven stops at the centre/14 mm under CIPA-2024 conditions
Video features–Circular 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 resistantNoYes
Filter diameter55 mm–
Maximum diameter69.2 mm76.5 mm
Length24.7 mm109.4 mm
Weight120 g476 g
ControlsCombined focus/control ring with AF/Control/MF selectorZoom, focus and customisable control rings; AF/MF switch, function button and zoom lock/limit control (Digital Camera World)
Zoom design–Internal zoom and focus retain the same physical lens length (Amateur Photographer; Digital Camera World)
Filter detail–No 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 resistanceNo dust or moisture resistanceDust 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 69.2 mm maximum diameter × 24.7 mm length, retractedApproximately 76.5 mm maximum diameter × 109.4 mm length, excluding detachable hood
Weight detailApproximately 120 g lensApproximately 476 g lens
Lens hoodEW-55, sold separatelyDetachable EW-76; remove for circular fisheye shooting to avoid the hood entering the image (Amateur Photographer; Digital Camera World)
In the boxLens, E-55 front cap, RF lens dust cap and user manualDrop-in clear filter included
Release detailJuly 2023 marketed month in Canon Camera MuseumCanon Japan specifies first sale on 20 February 2026; US announcement expected availability by the end of February, rather than the same exact regional day

More comparisons