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

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

	CanonEF 28mm f/2.8	CanonRF 28mm F2.8 STM
Overview
Released
Released	April 1987	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	Five elements in five groups	Eight elements in six groups
Special elements
Special elements	One moulded glass aspherical element, at the front of the optical system	Three plastic-moulded aspherical elements; Super Spectra coating; no fluorine coating
Diaphragm
Diaphragm	Five blades	Seven blades, circular aperture
Angle of view
Angle of view	75° diagonal, 65° horizontal and 46° vertical according to Canon's manual	–
Mount and compatibility
Mounts
Mounts	Canon EF	Canon RF
Image circle
Image circle	Full frame	Full frame
Compatibility
Compatibility	Canon EF cameras with full-frame or APS-C sensors	Canon RF mount, full-frame image circle; RF extenders not compatible
Focus and stabilisation
Autofocus
Autofocus	Yes	Yes
Minimum focus distance
Minimum focus distance	0.3 m	0.23 m
Maximum magnification
Maximum magnification	0.13×	0.17×
Optical stabilisation
Optical stabilisation	–	No
Autofocus detail
Autofocus detail	Conventional motor autofocus according to Photozone; no full-time manual override according to The Digital Picture	STM autofocus and electronic manual focusing
Focus distance detail
Focus distance detail	Mechanical manual focusing; Canon's manual requires the MF switch position. Inner tube extends towards close focus but the front does not rotate according to Photozone	Minimum focusing distance 0.23 m
Magnification detail
Magnification detail	–	Maximum 0.17× reproduction
Stabilisation detail
Stabilisation detail	–	No lens optical IS; compatible camera stabilisation is separate
Design
Dust and moisture resistant
Dust and moisture resistant	–	No
Filter diameter
Filter diameter	52 mm	55 mm
Maximum diameter
Maximum diameter	67.4 mm	69.2 mm
Length
Length	42.5 mm	24.7 mm
Weight
Weight	185 g	120 g (better)
Controls
Controls	AF/MF switch, focus ring, distance window, depth-of-field scale and infrared focus index	Combined focus/control ring with AF/Control/MF selector
Weather resistance
Weather resistance	–	No dust or moisture resistance
Dimensions detail
Dimensions detail	67.4 mm maximum diameter × 42.5 mm length; dimensions and 185 g weight are lens-only. Front and rear caps add 21.5 mm according to Canon's manual	Approximately 69.2 mm maximum diameter × 24.7 mm length, retracted
Weight detail
Weight detail	–	Approximately 120 g lens
Lens hood
Lens hood	EW-65 II reversible hood according to Canon's manual	EW-55, sold separately
In the box
In the box	–	Lens, E-55 front cap, RF lens dust cap and user manual
Release detail
Release detail	Canon Camera Museum records April 1987 marketing; no first-sale day is given	July 2023 marketed month in Canon Camera Museum