Canon EF 28mm f/2.8 IS USM vs Canon RF 28mm F2.8 STM

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EF 28mm f/2.8 IS USM compared with RF 28mm F2.8 STM

	CanonEF 28mm f/2.8 IS USM	CanonRF 28mm F2.8 STM
Overview
Released
Released	June 2012	July 2023
Optics
Lens type
Lens type	Prime	Prime
Focal length
Focal length	28 mm	28 mm
Maximum aperture
Maximum aperture	f/2.8	f/2.8
Minimum aperture
Minimum aperture	f/22	f/22
Optical construction
Optical construction	Nine elements in seven groups	Eight elements in six groups
Special elements
Special elements	Glass-moulded aspherical element	Three plastic-moulded aspherical elements; Super Spectra coating; no fluorine coating
Coatings
Coatings	Super Spectra coating according to Canon UK	–
Diaphragm
Diaphragm	Seven-blade circular aperture according to Canon Camera Museum	Seven blades, circular aperture
Angle of view
Angle of view	75° diagonal, 65° horizontal and 46° vertical	–
Mount and compatibility
Mounts
Mounts	Canon EF	Canon RF
Image circle
Image circle	Full frame	Full frame
Compatibility
Compatibility	Canon EF full-frame and APS-C cameras; EOS M requires EF-EOS M adapter	Canon RF mount, full-frame image circle; RF extenders not compatible
Teleconverter support
Teleconverter support	Canon extenders not compatible	–
Adaptor support
Adaptor support	Extension tube EF12 II gives 0.71–0.50× magnification; EF25 II gives 1.30–1.11×	–
Focus and stabilisation
Autofocus
Autofocus	Yes	Yes
Minimum focus distance
Minimum focus distance	0.23 m	0.23 m
Maximum magnification
Maximum magnification	0.2×	0.17×
Optical stabilisation
Optical stabilisation	Yes	No
Autofocus detail
Autofocus detail	Ring USM with full-time manual focus according to Canon UK; Camera Museum describes micro USM instead	STM autofocus and electronic manual focusing
Focus distance detail
Focus distance detail	Internal focusing with a non-rotating front and constant physical length according to The Digital Picture	Minimum focusing distance 0.23 m
Magnification detail
Magnification detail	–	Maximum 0.17× reproduction
Stabilisation detail
Stabilisation detail	Maker claim up to four stops; The Digital Picture and Photozone each report approximately three stops in their tests	No lens optical IS; compatible camera stabilisation is separate
Design
Dust and moisture resistant
Dust and moisture resistant	No	No
Filter diameter
Filter diameter	58 mm	55 mm
Maximum diameter
Maximum diameter	68.4 mm	69.2 mm
Length
Length	51.5 mm	24.7 mm
Weight
Weight	260 g	120 g (better)
Controls
Controls	–	Combined focus/control ring with AF/Control/MF selector
Weather resistance
Weather resistance	No weather sealing according to The Digital Picture and Photozone	No dust or moisture resistance
Dimensions detail
Dimensions detail	Maximum diameter × length in retracted state	Approximately 69.2 mm maximum diameter × 24.7 mm length, retracted
Weight detail
Weight detail	–	Approximately 120 g lens
Lens hood
Lens hood	Optional EW-65B; LP1014 pouch listed as an accessory	EW-55, sold separately
In the box
In the box	Lens, E-58U front cap, Lens Dust Cap E and user manual according to Canon UK	Lens, E-55 front cap, RF lens dust cap and user manual
Release detail
Release detail	Canon Camera Museum records June 2012 marketing and explicitly identifies the April 1987 EF 28mm f/2.8 as its predecessor	July 2023 marketed month in Canon Camera Museum