Canon EF-S 17–55mm f/2.8 IS USM vs Canon RF-S 18–45mm F4.5–6.3 IS STM
Better figure, where one is clearly better
| CanonEF-S 17–55mm f/2.8 IS USM | CanonRF-S 18–45mm F4.5–6.3 IS STM | |
|---|---|---|
| Overview | ||
| Released | May 2006 | June 2022 |
| Optics | ||
| Lens type | Zoom | Zoom |
| Focal length | 17–55 mm | 18–45 mm |
| Maximum aperture | f/2.8 | f/4.5–6.3 |
| Minimum aperture | f/22 | f/22–32 |
| Optical construction | 19 elements in 12 groups | Seven elements in seven groups |
| Special elements | Three aspherical elements, including one glass-moulded and two replica elements; two UD elements according to Canon Japan | Two plastic-moulded aspherical elements; Super Spectra coating; no fluorine coating |
| Aperture detail | – | Minimum f/22 at 18 mm and f/32 at 45 mm, per UK and Japan specifications; Camera Museum table lists f/18 at 18 mm |
| Coatings | Super Spectra coatings according to Canon UK | – |
| Diaphragm | Seven blades with a circular aperture according to Canon Camera Museum | Seven blades |
| Angle of view | Horizontal 68°40′–23°20′, vertical 48°–15°40′, diagonal 78°30′–27°50′ | – |
| Mount and compatibility | ||
| Mounts | Canon EF-S | Canon RF |
| Image circle | APS-C | APS-C |
| Compatibility | Canon EF-S compatible APS-C cameras; equivalent angle of view to 27–88 mm on full frame | 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 | Canon extenders are not compatible | – |
| Adaptor support | Canon UK confirms EOS M compatibility using the EF-EOS M adapter | – |
| Focus and stabilisation | ||
| Autofocus | Yes | Yes |
| Minimum focus distance | 0.35 m | 0.15 m (manual focus) |
| Maximum magnification | 0.17× | 0.26× (manual focus) |
| Optical stabilisation | Yes | Yes |
| Autofocus detail | USM autofocus with full-time manual override; distance information is transmitted for E-TTL II flash metering according to Canon UK | STM autofocus and electronic manual focusing |
| Focus distance detail | Internal focusing keeps lens length constant during focusing; front element does not rotate according to Photozone | Autofocus minimum 0.20 m at 18 mm, 0.30 m at 35 mm and 0.35 m at 45 mm; manual-focus minimum 0.15 m, 0.24 m and 0.25 m at those focal lengths |
| Magnification detail | Maximum 0.17× at 55 mm according to Canon Japan; EF12 II extension tube and 500D close-up lens supported, 250D close-up lens not supported | Autofocus maximum 0.14× at 18 mm, 0.15× at 35 mm and 0.16× at 45 mm; manual-focus maximum 0.25×, 0.21× and 0.26× respectively |
| Stabilisation detail | Canon states three shutter-speed stops of optical correction; Canon Japan lists no coordinated correction with camera IBIS | Optical IS rated four stops with EOS R10 at 45 mm under CIPA, yaw/pitch; coordinated IS rated 6.5 stops with EOS R7 at 45 mm under CIPA, yaw/pitch |
| Design | ||
| Dust and moisture resistant | No | No |
| Filter diameter | 77 mm | 49 mm |
| Maximum diameter | 83.5 mm | 69 mm |
| Length | 110.6 mm | 44.3 mm |
| Weight | 645 g | 130 g (better) |
| Controls | AF/MF and stabiliser switches; distance window and rear focus ring | Combined focus/control ring and zoom ring; AF/MF and IS controlled through camera settings |
| Zoom design | Extends towards the telephoto end according to Photozone and ePHOTOzine | Retractable barrel; lens must be extended for shooting |
| Weather resistance | Canon Japan lists no dust or drip resistance | No dust or moisture resistance |
| Dimensions detail | 83.5 mm maximum diameter × 110.6 mm length according to Canon | Approximately 69 mm maximum diameter × 44.3 mm length, retracted |
| Weight detail | – | Approximately 130 g lens |
| Lens hood | EW-83J hood and LP1219 pouch are optional accessories; Canon UK's box list includes neither. Canon Camera Museum's price table says case and built-in hood, conflicting with the UK package and separately listed removable EW-83J hood | EW-53 hood and LP814 pouch, sold separately |
| In the box | Lens, E77II front cap, Lens Dust Cap E and user manual according to Canon UK | Lens, E-49 front cap, RF lens dust cap and user manual |
| Release detail | Canon Camera Museum records May 2006 marketing. Canon Japan records announcement on 22 February and Japanese first sale on 31 May 2006; a separately established UK first-sale day is not published in these sources. | June 2022 marketed month in Canon Camera Museum |
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