The Canon EF 400mm f/2.8L IS III USM is an incredibly fast, professional-grade L-series super-telephoto prime lens, acclaimed for its outstanding optical performance, wide f/2.8 aperture, and significantly reduced weight, making it a benchmark for sports and wildlife photography.
| Mount | EF |
| Min focal length (mm) | 400 |
| Max focal length (mm) | 400 |
| Maximum aperture | f/2.8 |
| Minimum aperture | f/32 |
| Format | Full Frame |
| Image stabilization | Yes |
| Min focus distance (m) | 2.5 |
| maximum magnification | 0.17x |
| Filter thread (mm) | 52 (drop-in) |
| lens elements | 17 |
| lens groups | 13 |
| Diaphragm blades | 9 |
| Weight (g) | 2840 |
| Name | Price | Store |
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