Canon EF-S 17-85mm f4-5.6 IS USM#
The versatile “kit upgrade” zoom for Canon APS-C bodies. Covers 27–136mm equivalent — wide enough for interiors and landscapes, long enough for moderate telephoto — making it a capable all-day walkaround. Image stabilization (3 stops) and USM autofocus. The most-used lens in the library with 8,512 photos across three bodies.
Compatibility#
| Body | Notes | Photos in library |
|---|---|---|
| Canon EOS 40D | EF-S native | 5,092 |
| Canon EOS Digital Rebel XTi | EF-S native | 3,420 |
| Digital Rebel XT | Listed as “17.0-85.0mm” | 1,455 |
EF-S mount — APS-C only. Cannot be used on full-frame Canon bodies (5D, 6D, etc.) without risk of vignetting/mirror strike.
Key Specifications#
| Attribute | Spec |
|---|---|
| Focal length | 17–85mm (27–136mm equiv on APS-C) |
| Maximum aperture | f/4 (wide) – f/5.6 (tele) |
| Optical construction | 17 elements in 12 groups |
| Aperture blades | 6 |
| Minimum focus | 35 cm |
| Filter thread | 67mm |
| AF motor | USM (ring-type, fast and quiet) |
| Stabilization | IS — approx. 3 stops |
| Weight | 475g |
| Dimensions | 78.5 × 92mm |
| Year | 2004 |