Canon RF 50mm F1.8 STM vs Canon RF 7-14mm F2.8-3.5L FISHEYE STM

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RF 50mm F1.8 STM compared with RF 7-14mm F2.8-3.5L FISHEYE STM

	CanonRF 50mm F1.8 STM	CanonRF 7-14mm F2.8-3.5L FISHEYE STM
Overview
Released
Released	December 2020	February 2026
Optics
Lens type
Lens type	Prime	Zoom
Focal length
Focal length	50 mm	7–14 mm
Maximum aperture
Maximum aperture	f/1.8	f/2.8–3.5
Minimum aperture
Minimum aperture	f/22	f/22–29
Optical construction
Optical construction	Six elements in five groups	16 elements in 11 groups
Special elements
Special elements	One aspherical element	Five UD and two replica aspherical elements
Coatings
Coatings	Super Spectra anti-reflection coating	Three ASC coatings and Super Spectra; fluorine coating on the front element
Aperture detail
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
Diaphragm
Diaphragm	Seven blades	Nine aperture blades
Angle of view
Angle of view	Full-frame horizontal40°, vertical27°30′ and diagonal46°	Horizontal 190°–149°45′, vertical 190°–99°50′ and diagonal 190°–180° on full frame
Projection
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
Mounts
Mounts	Canon RF	Canon RF
Image circle
Image circle	Full frame	Full frame
Compatibility
Compatibility	Canon EOS R cameras; full-frame RF mount. Distinct from EF50mmF1.8STM and RF50mmF1.2LUSM	Canon 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
Teleconverter support	Canon RF extenders not compatible	Canon RF extenders not compatible
Focus and stabilisation
Autofocus
Autofocus	Yes	Yes
Minimum focus distance
Minimum focus distance	0.3 m	0.15 m (autofocus)
Maximum magnification
Maximum magnification	0.25×	0.35× (autofocus)
Optical stabilisation
Optical stabilisation	No	No
Autofocus detail
Autofocus detail	STM autofocus; electronic manual focus. Photography Blog reports selection of manual focus through the camera menu	Leadscrew-type STM focusing with position sensors; full-time manual focus; maker rear-focusing design maintains length during focus
Focus distance detail
Focus distance detail	Minimum focus distance0.30m; maker table does not distinguish AF and MF figures, so no mode inferred. Extending inner tube during close focusing, as documented by OpticalLimits	Maker specifies 0.15 m throughout the 7–14 mm range in autofocus
Magnification detail
Magnification detail	Maker maximum magnification0.25×; no unpublished AF/MF distinction inferred	Maximum 0.35× at 14 mm in autofocus, measured at the image centre; do not assume identical magnification across a fisheye image
Stabilisation detail
Stabilisation detail	No lens optical IS; compatible cameras may provide body stabilisation separately	No lens optical IS; maker separately lists compatible camera IBIS at seven stops at the centre/14 mm under CIPA-2024 conditions
Video features
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 resistant
Dust and moisture resistant	–	Yes
Filter diameter
Filter diameter	43 mm	–
Maximum diameter
Maximum diameter	69.2 mm	76.5 mm
Length
Length	40.5 mm	109.4 mm
Weight
Weight	160 g (better)	476 g
Controls
Controls	Shared focus/control ring with focus-control selector; control mode can adjust camera settings	Zoom, focus and customisable control rings; AF/MF switch, function button and zoom lock/limit control (Digital Camera World)
Zoom design
Zoom design	–	Internal zoom and focus retain the same physical lens length (Amateur Photographer; Digital Camera World)
Filter detail
Filter detail	43mm front filter thread; maker lists Canon250D/500D close-up lenses and PL-C B circular polariser incompatible	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 resistance
Weather resistance	UK maker dust/moisture resistance entry is a dash; OpticalLimits explicitly reports no weather sealing	Dust 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 detail
Dimensions detail	Approximately69.2mm maximum diameter ×40.5mm length, measured retracted by Canon	Approximately 76.5 mm maximum diameter × 109.4 mm length, excluding detachable hood
Weight detail
Weight detail	Approximately160g lens	Approximately 476 g lens
Lens hood
Lens hood	ES-65B, sold separately	Detachable EW-76; remove for circular fisheye shooting to avoid the hood entering the image (Amateur Photographer; Digital Camera World)
In the box
In the box	Lens, E-43 front cap and Lens Dust Cap RF; hood and LP1014 pouch are optional according to UK maker specifications	Drop-in clear filter included
Release detail
Release detail	December2020 marketed month in Canon Camera Museum. Canon Canada scheduled mid-December2020 availability; Canon Japan records first sale24December2020. Headline retains month because the exact earliest international retail day is not documented; Japan's later day is not presented as a worldwide date	Canon Japan specifies first sale on 20 February 2026; US announcement expected availability by the end of February, rather than the same exact regional day