Canon RF 28mm F2.8 STM vs Canon RF 85mm F1.4L VCM

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RF 28mm F2.8 STM compared with RF 85mm F1.4L VCM

	CanonRF 28mm F2.8 STM	CanonRF 85mm F1.4L VCM
Overview
Released
Released	July 2023	September 2025
Optics
Lens type
Lens type	Prime	Prime
Focal length
Focal length	28 mm	85 mm
Maximum aperture
Maximum aperture	f/2.8	f/1.4
Minimum aperture
Minimum aperture	f/22	f/16
Optical construction
Optical construction	Eight elements in six groups	14 elements in 10 groups
Special elements
Special elements	Three plastic-moulded aspherical elements; Super Spectra coating; no fluorine coating	One UD and one glass-moulded aspherical element
Coatings
Coatings	–	ASC and Super Spectra; fluorine coating on the front element
Aperture detail
Aperture detail	–	f/1.4–16 with stepless iris ring; no click-stop option (Amateur Photographer)
Diaphragm
Diaphragm	Seven blades, circular aperture	11 circular aperture blades
Angle of view
Angle of view	–	24° horizontal, 16° vertical and 28°30′ 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; stills iris-ring support is body/firmware dependent
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	0.75 m
Maximum magnification
Maximum magnification	0.17×	0.12×
Optical stabilisation
Optical stabilisation	No	No
Autofocus detail
Autofocus detail	STM autofocus and electronic manual focusing	Voice Coil Motor autofocus; electronic manual focus; maker notes movement/noise in unpowered internal VCM components is normal
Focus distance detail
Focus distance detail	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	No lens optical IS; maker separately lists camera IBIS CIPA-2024 performance of eight stops at the centre and seven at the corners under its camera/test conditions
Video features
Video features	–	Optically suppressed focus breathing and stepless iris control; UK maker footnote excludes stills iris-ring operation on EOS R/RP/Ra/R3/R5/R6/R6 Mark II/R7/R8/R10/R50/R100/R5 C even with current firmware
Design
Dust and moisture resistant
Dust and moisture resistant	No	Yes
Filter diameter
Filter diameter	55 mm	67 mm
Maximum diameter
Maximum diameter	69.2 mm	76.5 mm
Length
Length	24.7 mm	99.3 mm
Weight
Weight	120 g (better)	636 g
Controls
Controls	Combined focus/control ring with AF/Control/MF selector	Customisable control ring, focus ring, iris ring with Auto-position lock, function button and AF/MF switch (Amateur Photographer)
Filter detail
Filter detail	–	67 mm front screw-in filter thread; compatible Canon 67 mm Protect and PL-C B circular polarising filters
Weather resistance
Weather resistance	No dust or moisture resistance	Dust and moisture resistant with mount gasket; Canon states protection requires attachment to a camera and cannot prevent all dust or water ingress; no waterproof/IP rating inferred
Dimensions detail
Dimensions detail	Approximately 69.2 mm maximum diameter × 24.7 mm length, retracted	Approximately 76.5 mm maximum diameter × 99.3 mm length
Weight detail
Weight detail	Approximately 120 g lens	Approximately 636 g lens
Lens hood
Lens hood	EW-55, sold separately	ET-73C; maker lists E-67 II cap, Lens Dust Cap RF and LP1219 pouch as accessories
In the box
In the box	Lens, E-55 front cap, RF lens dust cap and user manual	–
Release detail
Release detail	July 2023 marketed month in Canon Camera Museum	Canon Japan specifies first sale on 27 September 2025; no UK first-sale day inferred