Canon RF 24–70mm F2.8L IS USM vs Canon RF 28–70mm F2.8 IS STM
Better figure, where one is clearly better
| CanonRF 24–70mm F2.8L IS USM | CanonRF 28–70mm F2.8 IS STM | |
|---|---|---|
| Overview | ||
| Released | September 2019 | September 2024 |
| Optics | ||
| Lens type | Zoom | Zoom |
| Focal length | 24–70 mm | 28–70 mm |
| Maximum aperture | f/2.8 | f/2.8 |
| Minimum aperture | f/22 | f/22 |
| Optical construction | 21 elements in 15 groups | 15 elements in 12 groups |
| Special elements | Three glass-moulded aspherical elements and three UD elements | Two UD elements and two GMo aspherical elements |
| Coatings | ASC anti-reflection coating and fluorine coating | Super Spectra; no fluorine coating, per UK maker specification |
| Diaphragm | Nine blades with circular aperture | Nine blades |
| Angle of view | Full-frame horizontal 74°–29°, vertical 53°–19°30′ and diagonal 84°–34° | – |
| Mount and compatibility | ||
| Mounts | Canon RF | Canon RF |
| Image circle | Full frame | Full frame |
| Compatibility | Canon EOS R cameras; full-frame image circle. RF optical model distinct from EF24–70mm F2.8L generations and RF28–70mm F2.8 IS STM | Full-frame image circle, Canon RF mount; incompatible with EF DSLRs and EOS M bodies. Canon RF extenders not compatible |
| Focus and stabilisation | ||
| Autofocus | Yes | Yes |
| Minimum focus distance | 0.21 m | 0.24 m (manual focus) |
| Maximum magnification | 0.3× | 0.24× |
| Optical stabilisation | Yes | Yes |
| Autofocus detail | Nano USM autofocus; electronic full-time manual focus. Maker rear-focusing design does not change lens length while focusing | Lead-screw STM with magnetic motor-speed sensor and feedback control, electronic manual focus |
| Focus distance detail | Maker minimum focus distance 0.21 m at 24 mm; Photography Blog reports 0.38 m at 70 mm. AF/MF mode distinction unpublished and omitted | Minimum focus at 28 mm is 0.27 m in AF or 0.24 m in MF; main figure retains the closer MF mode |
| Magnification detail | Maker maximum magnification 0.30× at 32 mm; no unpublished AF/MF distinction inferred | Maximum 0.24× at 70 mm in either AF or MF |
| Stabilisation detail | Lens optical IS rated five stops under CIPA guidelines at 70 mm with EOS R; body stabilisation is separate | Lens optical IS rated 5.5 central stops at 70 mm with EOS R8, yaw/pitch under CIPA2024. Japan current feature page rates coordinated EOS R6 Mark II body/lens IS 7.5 central and 7.0 peripheral stops, yaw/pitch/roll; original press release gives the same coordinated rating with EOS R1 |
| Video features | – | Smooth STM movie focusing; compatible camera breathing correction is digital. Cameralabs observes uncorrected focus breathing, more visible at 28 mm |
| Design | ||
| Dust and moisture resistant | Yes | Yes |
| Filter diameter | 82 mm | 67 mm |
| Maximum diameter | 88.5 mm | 76.5 mm |
| Length | 125.7 mm | 92.2 mm |
| Weight | 900 g | 490 g (better) |
| Controls | Zoom and focus rings, customisable lens control ring, AF/MF and IS switches; Japan maker offers a paid control-ring de-click service | Shared focus/control ring with AF/control/MF selector; separate zoom ring and stabilisation switch |
| Zoom design | Extending zoom barrel; dimensions measured retracted | Retractable barrel must be extended to 28 mm before shooting; length 92.2 mm stored, 112.4 mm at 28 mm and 138.9 mm at 70 mm, per Japan maker table |
| Filter detail | 82 mm front filter thread | – |
| Weather resistance | Dust and moisture resistant construction requires attachment to a camera; cannot completely prevent dust or water ingress and is not waterproof | UK maker states dust/moisture resistance, including rubber mount seal; no waterproof rating published |
| Dimensions detail | Approximately 88.5 mm maximum diameter × 125.7 mm length, retracted | Maximum diameter 76.5 mm; 92.2 mm length when retracted |
| Weight detail | Approximately 900 g lens | UK current specification and store state 490 g; Japan current table, Camera Museum and original press release state 495 g. Main value follows UK specification; no undocumented regional variant inferred |
| Lens hood | EW-88E | EW-73D, sold separately |
| In the box | UK maker store lists lens, EW-88E hood, LP1222 case, Lens Dust Cap RF and E-82 II front cap | UK maker store lists lens, E-67 II front cap, rear dust cap and user manual |
| Release detail | September 2019 marketed month in Canon Camera Museum; original Japan maker announcement gives late September. Exact worldwide first retail day is not inferred. Co-sold standard zooms are alternatives, with no inferred successor link | September 2024 marketed month in Canon Camera Museum; original maker release specifies 27 September in Japan. No exact worldwide first-sale day inferred; no successor link inferred across co-sold standard zooms |
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