Canon RF 50mm F1.2 L USM vs Canon RF 50mm F1.8 STM

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RF 50mm F1.2 L USM compared with RF 50mm F1.8 STM

	CanonRF 50mm F1.2 L USM	CanonRF 50mm F1.8 STM
Overview
Released
Released	October 2018	December 2020
Optics
Lens type
Lens type	Prime	Prime
Focal length
Focal length	50 mm	50 mm
Maximum aperture
Maximum aperture	f/1.2	f/1.8
Minimum aperture
Minimum aperture	f/16	f/22
Optical construction
Optical construction	Fifteen elements in nine groups	Six elements in five groups
Special elements
Special elements	One UD element, two ground and polished aspherical elements and one glass-moulded aspherical element; Air Sphere Coating	One aspherical element
Coatings
Coatings	–	Super Spectra anti-reflection coating
Diaphragm
Diaphragm	Ten blades with circular aperture	Seven blades
Angle of view
Angle of view	–	Full-frame horizontal40°, vertical27°30′ and diagonal46°
Mount and compatibility
Mounts
Mounts	Canon RF	Canon RF
Image circle
Image circle	Full frame	Full frame
Compatibility
Compatibility	Canon RF mount for full-frame and APS-C EOS R cameras; not compatible with EOS DSLRs	Canon EOS R cameras; full-frame RF mount. Distinct from EF50mmF1.8STM and RF50mmF1.2LUSM
Teleconverter support
Teleconverter support	–	Canon RF extenders not compatible
Focus and stabilisation
Autofocus
Autofocus	Yes	Yes
Minimum focus distance
Minimum focus distance	0.4 m	0.3 m
Maximum magnification
Maximum magnification	0.19×	0.25×
Optical stabilisation
Optical stabilisation	No	No
Autofocus detail
Autofocus detail	Ring-type USM; electronic manual focusing with full-time manual override	STM autofocus; electronic manual focus. Photography Blog reports selection of manual focus through the camera menu
Focus distance detail
Focus distance detail	Minimum focus 0.4 m; focus limiter selects full range or 0.8 m–infinity (Cameralabs)	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
Magnification detail
Magnification detail	Maximum 0.19×	Maker maximum magnification0.25×; no unpublished AF/MF distinction inferred
Stabilisation detail
Stabilisation detail	No optical image stabiliser (Cameralabs)	No lens optical IS; compatible cameras may provide body stabilisation separately
Design
Dust and moisture resistant
Dust and moisture resistant	Yes	–
Filter diameter
Filter diameter	77 mm	43 mm
Maximum diameter
Maximum diameter	89.8 mm	69.2 mm
Length
Length	108 mm	40.5 mm
Weight
Weight	950 g	160 g (better)
Controls
Controls	Electronic manual-focus and customisable control rings; AF/MF and focus-limiter switches	Shared focus/control ring with focus-control selector; control mode can adjust camera settings
Filter detail
Filter detail	–	43mm front filter thread; maker lists Canon250D/500D close-up lenses and PL-C B circular polariser incompatible
Weather resistance
Weather resistance	Dust and moisture resistant construction	UK maker dust/moisture resistance entry is a dash; OpticalLimits explicitly reports no weather sealing
Dimensions detail
Dimensions detail	Approximately 89.8 mm maximum diameter × 108 mm length	Approximately69.2mm maximum diameter ×40.5mm length, measured retracted by Canon
Weight detail
Weight detail	Approximately 950 g lens	Approximately160g lens
Lens hood
Lens hood	ES-83 hood included	ES-65B, sold separately
In the box
In the box	Lens, E-77 II front cap, RF dust cap, ES-83 hood, LP1319 case and user manual	Lens, E-43 front cap and Lens Dust Cap RF; hood and LP1014 pouch are optional according to UK maker specifications
Release detail
Release detail	October 2018 marketed month in Canon Camera Museum	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