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Canon RF 24–240mm F4–6.3 IS USM 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 24–240mm F4–6.3 IS USMCanonRF 7-14mm F2.8-3.5L FISHEYE STM
Overview
ReleasedSeptember 2019February 2026
Optics
Lens typeZoomZoom
Focal length24–240 mm7–14 mm
Maximum aperturef/4–6.3f/2.8–3.5
Minimum aperturef/22–36f/22–29
Optical construction21 elements in 15 groups16 elements in 11 groups
Special elements–Five UD and two replica aspherical elements
Coatings–Three ASC coatings and Super Spectra; fluorine coating on the front element
Aperture detailMinimum f/22 at 24 mm and f/36 at 240 mm in Canon Japan specifications; UK table lists 22–38 (36); clickless one-eighth-stop aperture control for moviesf/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
CompatibilityFull-frame Canon RF mount; compatible with APS-C EOS R bodies; 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 distance0.5 m0.15 m (autofocus)
Maximum magnification0.26×0.35× (autofocus)
Optical stabilisationYesNo
Autofocus detailNano USM 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 0.5 m at 24 mm, per Canon; 0.78 m at 240 mm reported by CameralabsMaker specifies 0.15 m throughout the 7–14 mm range in autofocus
Magnification detailMaximum 0.26× at 240 mmMaximum 0.35× at 14 mm in autofocus, measured at the image centre; do not assume identical magnification across a fisheye image
Stabilisation detailOptical IS rated five stops with EOS R at 240 mm under CIPA; Dynamic IS for movies, reported by OpticalLimitsNo 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 diameter72 mm–
Maximum diameter80.4 mm76.5 mm
Length122.5 mm109.4 mm
Weight750 g476 g
ControlsCombined focus/control ring with selector, zoom ring with lock at 24 mm and IS on/off switchZoom, focus and customisable control rings; AF/MF switch, function button and zoom lock/limit control (Digital Camera World)
Zoom designExtending two-section barrel; lockable zoom ring with 100° rotationInternal 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 80.4 mm maximum diameter × 122.5 mm length, retractedApproximately 76.5 mm maximum diameter × 109.4 mm length, excluding detachable hood
Weight detailApproximately 750 g lensApproximately 476 g lens
Lens hoodEW-78F hood and LP1219 pouch, neither bundledDetachable EW-76; remove for circular fisheye shooting to avoid the hood entering the image (Amateur Photographer; Digital Camera World)
In the boxLens, E-72 II front cap, RF lens dust cap and user manual kitDrop-in clear filter included
Release detailSeptember 2019 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

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