Canon RF 28mm F2.8 STM vs Canon RF 45mm F1.2 STM

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RF 28mm F2.8 STM compared with RF 45mm F1.2 STM

	CanonRF 28mm F2.8 STM	CanonRF 45mm F1.2 STM
Overview
Released
Released	July 2023	November 2025
Optics
Lens type
Lens type	Prime	Prime
Focal length
Focal length	28 mm	45 mm
Maximum aperture
Maximum aperture	f/2.8	f/1.2
Minimum aperture
Minimum aperture	f/22	f/16
Optical construction
Optical construction	Eight elements in six groups	Nine elements in seven groups
Special elements
Special elements	Three plastic-moulded aspherical elements; Super Spectra coating; no fluorine coating	One plastic-moulded aspherical element (Canon USA)
Coatings
Coatings	–	Super Spectra coating
Aperture detail
Aperture detail	–	f/1.2–16
Diaphragm
Diaphragm	Seven blades, circular aperture	Nine aperture blades
Angle of view
Angle of view	–	43°35′ horizontal, 29°50′ vertical and 51°20′ diagonal on full frame
Mount and compatibility
Mounts
Mounts	Canon RF	Canon RF
Image circle
Image circle	Full frame	Full frame
Compatibility
Compatibility	Canon RF mount, full-frame image circle; RF extenders not compatible	Canon EOS R cameras; full-frame image circle
Teleconverter support
Teleconverter support	–	Canon RF extenders not compatible
Focus and stabilisation
Autofocus
Autofocus	Yes	Yes
Minimum focus distance
Minimum focus distance	0.23 m	0.45 m
Maximum magnification
Maximum magnification	0.17×	0.13×
Optical stabilisation
Optical stabilisation	No	No
Autofocus detail
Autofocus detail	STM autofocus and electronic manual focusing	Gear-type STM autofocus with magnetic focus-position detection; full-time electronic manual focus
Focus distance detail
Focus distance detail	Minimum focusing distance 0.23 m	Minimum focusing distance 0.45 m; Canon does not separately specify AF/MF distances
Magnification detail
Magnification detail	Maximum 0.17× reproduction	–
Stabilisation detail
Stabilisation detail	No lens optical IS; compatible camera stabilisation is separate	No optical image stabilisation (Canon USA)
Design
Dust and moisture resistant
Dust and moisture resistant	No	No
Filter diameter
Filter diameter	55 mm	67 mm
Maximum diameter
Maximum diameter	69.2 mm	78 mm
Length
Length	24.7 mm	75 mm
Weight
Weight	120 g (better)	346 g
Controls
Controls	Combined focus/control ring with AF/Control/MF selector	Separate focus and clickable control rings; AF/MF switch; no iris ring or lens function button (Canon USA)
Filter detail
Filter detail	–	67 mm front screw-in filter thread
Weather resistance
Weather resistance	No dust or moisture resistance	No dust or weather resistant construction (Canon USA)
Dimensions detail
Dimensions detail	Approximately 69.2 mm maximum diameter × 24.7 mm length, retracted	Approximately 78 mm maximum diameter × 75 mm length
Weight detail
Weight detail	Approximately 120 g lens	Approximately 346 g lens
Lens hood
Lens hood	EW-55, sold separately	Optional ES-73B hood and LP1116 case; E-67 II front cap and Lens Dust Cap RF listed by Canon
In the box
In the box	Lens, E-55 front cap, RF lens dust cap and user manual	Front and rear lens caps (Amateur Photographer); hood not included
Release detail
Release detail	July 2023 marketed month in Canon Camera Museum	Canon Japan's 14 November 2025 notice confirms first sale on 28 November 2025; Photography Blog instead reports availability from 20 November without a matching regional maker day, so no UK date is inferred