Canon RF 24–240mm F4–6.3 IS USM vs Canon RF 45mm F1.2 STM

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RF 24–240mm F4–6.3 IS USM compared with RF 45mm F1.2 STM

	CanonRF 24–240mm F4–6.3 IS USM	CanonRF 45mm F1.2 STM
Overview
Released
Released	September 2019	November 2025
Optics
Lens type
Lens type	Zoom	Prime
Focal length
Focal length	24–240 mm	45 mm
Maximum aperture
Maximum aperture	f/4–6.3	f/1.2
Minimum aperture
Minimum aperture	f/22–36	f/16
Optical construction
Optical construction	21 elements in 15 groups	Nine elements in seven groups
Special elements
Special elements	–	One plastic-moulded aspherical element (Canon USA)
Coatings
Coatings	–	Super Spectra coating
Aperture detail
Aperture detail	Minimum f/22 at 24 mm and f/36 at 240 mm in Canon Japan specifications; UK table lists 22–38 (36); clickless one-eighth-stop aperture control for movies	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	Full-frame Canon RF mount; compatible with APS-C EOS R bodies; 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	0.5 m	0.45 m
Maximum magnification
Maximum magnification	0.26×	0.13×
Optical stabilisation
Optical stabilisation	Yes	No
Autofocus detail
Autofocus detail	Nano USM 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 0.5 m at 24 mm, per Canon; 0.78 m at 240 mm reported by Cameralabs	Minimum focusing distance 0.45 m; Canon does not separately specify AF/MF distances
Magnification detail
Magnification detail	Maximum 0.26× at 240 mm	–
Stabilisation detail
Stabilisation detail	Optical IS rated five stops with EOS R at 240 mm under CIPA; Dynamic IS for movies, reported by OpticalLimits	No optical image stabilisation (Canon USA)
Design
Dust and moisture resistant
Dust and moisture resistant	No	No
Filter diameter
Filter diameter	72 mm	67 mm
Maximum diameter
Maximum diameter	80.4 mm	78 mm
Length
Length	122.5 mm	75 mm
Weight
Weight	750 g	346 g (better)
Controls
Controls	Combined focus/control ring with selector, zoom ring with lock at 24 mm and IS on/off switch	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
Zoom design
Zoom design	Extending two-section barrel; lockable zoom ring with 100° rotation	–
Weather resistance
Weather resistance	No dust or moisture resistance	No dust or weather resistant construction (Canon USA)
Dimensions detail
Dimensions detail	Approximately 80.4 mm maximum diameter × 122.5 mm length, retracted	Approximately 78 mm maximum diameter × 75 mm length
Weight detail
Weight detail	Approximately 750 g lens	Approximately 346 g lens
Lens hood
Lens hood	EW-78F hood and LP1219 pouch, neither bundled	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-72 II front cap, RF lens dust cap and user manual kit	Front and rear lens caps (Amateur Photographer); hood not included
Release detail
Release detail	September 2019 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