Canon RF 45mm F1.2 STM vs Canon RF-S 55–210mm F5–7.1 IS STM

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RF 45mm F1.2 STM compared with RF-S 55–210mm F5–7.1 IS STM

	CanonRF 45mm F1.2 STM	CanonRF-S 55–210mm F5–7.1 IS STM
Overview
Released
Released	November 2025	March 2023
Optics
Lens type
Lens type	Prime	Zoom
Focal length
Focal length	45 mm	55–210 mm
Maximum aperture
Maximum aperture	f/1.2	f/5–7.1
Minimum aperture
Minimum aperture	f/16	f/22–32
Optical construction
Optical construction	Nine elements in seven groups	Eleven elements in eight groups
Special elements
Special elements	One plastic-moulded aspherical element (Canon USA)	Two UD elements and one plastic-moulded aspherical element; Super Spectra coating; no fluorine coating
Coatings
Coatings	Super Spectra coating	–
Aperture detail
Aperture detail	f/1.2–16	Minimum f/22 at 55 mm and f/32 at 210 mm
Diaphragm
Diaphragm	Nine aperture blades	Seven 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	APS-C
Compatibility
Compatibility	Canon EOS R cameras; full-frame image circle	Canon RF mount with APS-C image circle; full-frame EOS R bodies crop to APS-C; RF extenders and EF extension tubes not compatible
Teleconverter support
Teleconverter support	Canon RF extenders not compatible	–
Focus and stabilisation
Autofocus
Autofocus	Yes	Yes
Minimum focus distance
Minimum focus distance	0.45 m	0.73 m
Maximum magnification
Maximum magnification	0.13×	0.28×
Optical stabilisation
Optical stabilisation	No	Yes
Autofocus detail
Autofocus detail	Gear-type STM autofocus with magnetic focus-position detection; full-time electronic manual focus	Lead-screw STM autofocus and electronic manual focusing
Focus distance detail
Focus distance detail	Minimum focusing distance 0.45 m; Canon does not separately specify AF/MF distances	Minimum focus 1 m at 55 mm and 0.73 m at 210 mm
Magnification detail
Magnification detail	–	Maximum 0.05× at 55 mm and 0.28× at 210 mm
Stabilisation detail
Stabilisation detail	No optical image stabilisation (Canon USA)	Optical IS rated 4.5 stops with EOS R10 at 210 mm under CIPA, yaw/pitch; coordinated IS rated seven stops with EOS R7 at 210 mm under CIPA, yaw/pitch
Design
Dust and moisture resistant
Dust and moisture resistant	No	No
Filter diameter
Filter diameter	67 mm	55 mm
Maximum diameter
Maximum diameter	78 mm	69 mm
Length
Length	75 mm	92.9 mm
Weight
Weight	346 g	270 g (better)
Controls
Controls	Separate focus and clickable control rings; AF/MF switch; no iris ring or lens function button (Canon USA)	Combined focus/control ring and zoom ring; AF/MF and IS controlled through camera settings
Zoom design
Zoom design	–	Extending zoom barrel
Filter detail
Filter detail	67 mm front screw-in filter thread	–
Weather resistance
Weather resistance	No dust or weather resistant construction (Canon USA)	No dust or moisture resistance
Dimensions detail
Dimensions detail	Approximately 78 mm maximum diameter × 75 mm length	Approximately 69 mm maximum diameter × 92.9 mm length, per Canon Japan and Camera Museum; UK table labels 135 mm as retracted, while Digital Camera World identifies 135 mm as extended
Weight detail
Weight detail	Approximately 346 g lens	Approximately 270 g lens
Lens hood
Lens hood	Optional ES-73B hood and LP1116 case; E-67 II front cap and Lens Dust Cap RF listed by Canon	ET-60B hood and LP1016 pouch, sold separately
In the box
In the box	Front and rear lens caps (Amateur Photographer); hood not included	Lens, E-55 front cap, RF lens dust cap and user manual
Release detail
Release detail	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	March 2023 marketed month in Canon Camera Museum