Canon RF 24–105mm F4–7.1 IS STM vs Canon RF 28–70mm F2.8 IS STM
Better figure, where one is clearly better
| CanonRF 24–105mm F4–7.1 IS STM | CanonRF 28–70mm F2.8 IS STM | |
|---|---|---|
| Overview | ||
| Released | April 2020 | September 2024 |
| Optics | ||
| Lens type | Zoom | Zoom |
| Focal length | 24–105 mm | 28–70 mm |
| Maximum aperture | f/4–7.1 | f/2.8 |
| Minimum aperture | f/22–40 | f/22 |
| Optical construction | 13 elements in 11 groups, per Japan maker specification and Canon Camera Museum | 15 elements in 12 groups |
| Special elements | Aspherical element shown in Canon Camera Museum optical diagram | Two UD elements and two GMo aspherical elements |
| Coatings | – | Super Spectra; no fluorine coating, per UK maker specification |
| Aperture detail | Minimum f/22 at 24 mm and f/40 at 105 mm | – |
| Diaphragm | Seven blades, circular aperture | Nine blades |
| Mount and compatibility | ||
| Mounts | Canon RF | Canon RF |
| Image circle | Full frame | Full frame |
| Compatibility | Canon RF mount, full-frame image circle; RF extenders and EF extension tubes not compatible | 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 | 0.13 m (manual focus) | 0.24 m (manual focus) |
| Maximum magnification | 0.5× (manual focus) | 0.24× |
| Optical stabilisation | Yes | Yes |
| Autofocus detail | Lead-screw STM, electronic manual focus; combined focus/control ring | Lead-screw STM with magnetic motor-speed sensor and feedback control, electronic manual focus |
| Focus distance detail | Autofocus minimum 0.20 m at 24 mm or 0.34 m at 105 mm; manual-focus Centre Focus Macro minimum 0.13 m at 24 mm, approximately 2.5 cm from the lens front, with sharpness concentrated in the image centre | 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 | Autofocus maximum 0.4× at 105 mm; manual-focus Centre Focus Macro maximum 0.5× at 24 mm, per Japan maker table and Camera Museum | Maximum 0.24× at 70 mm in either AF or MF |
| Stabilisation detail | Optical IS rated five stops at 105 mm on EOS R under CIPA; lens optical rating is distinct from any camera sensor stabilisation | 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 | No | Yes |
| Filter diameter | 67 mm | 67 mm |
| Maximum diameter | 76.6 mm | 76.5 mm |
| Length | 88.8 mm | 92.2 mm |
| Weight | 395 g (better) | 490 g |
| Controls | Combined focus/control ring, zoom ring and separate stabilisation switch; OpticalLimits notes manual/auto focus is selected through camera settings rather than an AF/MF lens switch | Shared focus/control ring with AF/control/MF selector; separate zoom ring and stabilisation switch |
| Zoom design | Extending zoom barrel | 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 |
| Weather resistance | OpticalLimits and Cameralabs report no weather sealing | UK maker states dust/moisture resistance, including rubber mount seal; no waterproof rating published |
| Dimensions detail | Approximately 76.6 mm maximum diameter ×88.8 mm length | Maximum diameter 76.5 mm; 92.2 mm length when retracted |
| Weight detail | Approximately 395 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-73D, not bundled | EW-73D, sold separately |
| In the box | – | UK maker store lists lens, E-67 II front cap, rear dust cap and user manual |
| Release detail | April 2020 marketed month in Canon Camera Museum | 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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