400 Canon RF 400mm F2.8 L IS USM
The Canon RF 400mm F2.8 L IS USM is a prime lens for Canon RF (Full frame) that covers 400 mm at f/2.8, weighs 2890 g and focuses as close as 2.5 m.
- f/2.8widest aperture
- 2890 gweight
- 17bodies it fits
Bodies it fits
17 bodies- Fits
Full frame bodies
- Canon EOS R
- Canon EOS R1
- Canon EOS R3
- Canon EOS R5
- Canon EOS R5 Mark II
- Canon EOS R6
- Canon EOS R6 Mark II
- Canon EOS R6 Mark III
- Canon EOS R6 V
- Canon EOS R8
- Canon EOS R8 Mark II
- Canon EOS RP
- Fits
APS-C bodies
It mounts and works fully. It covers a bigger frame than their APS-C sensor, which records the middle of it.
- Canon EOS R10
- Canon EOS R100
- Canon EOS R50
- Canon EOS R50 V
- Canon EOS R7
Specifications
- Focal length
- 400 mm1
- Widest aperture
- f/2.82
- Closest focus
- 2.5 m3
- Maximum magnification
- 0.17x3
- Stabilization
- 5.5 stops3
- Mount
- Canon RF3
- Covers
- Full frame
- Type
- Prime
- Weight
- 2890 g3
- Length
- 367 mm3
- Diameter
- 163 mm3
- Filter thread
- 52 mm3
- On sale from
- Jul 20214
- Elements
- 173
- Groups
- 133
- Aperture blades
- 93
- Weather sealed
- Yes3
- Focus motor
- Ring USM3
- Extenders
- Extender RF 1.4x, Extender RF 2x3
Sources
- www.canon.at, cited by Wikidata for Focal length (Wikidata checked Oct 9, 2026; we didn't read this page)
- Wikidata, checked Oct 9, 2026 (CC0 1.0)
- Canon product specifications, checked Oct 6, 2026
- global.canon, cited by Wikidata for On sale from (Wikidata checked Oct 9, 2026; we didn't read this page)
Worked out by code, not stated by a source
- Read from the lens name: each maker marks the sensor size a lens covers (Sony FE/E, Canon RF/RF-S, Nikon DX, Tamron Di III/Di III-A, Sigma DG/DC); every Fujifilm X lens is APS-C and every Micro Four Thirds lens is Four Thirds.
- Prime or zoom, read from the focal length in the lens name.
Each value is checked automatically against the source it links, on the date shown. How we build these pages
† The makers' own tables, row by row, with labels in our plain words (translated where the maker's page isn't in English); each row's numbers are checked against the page it links.
Full specifications†
Show all 17 rows
| Full specifications | Canon RF 400mm F2.8 L IS USM3 |
|---|---|
| Diagonal angle of view | 06°10′ (Diagonal) |
| Horizontal angle of view | 05°10′ (Horizontal) |
| Vertical angle of view | 03°30′ (Vertical) |
| Closest focusing distance | 2.5 m / 8.20 ft |
| Lens construction | 13 groups, 17 elements |
| Diameter and length | 163 mm x 367 mm (Approx.) |
| Drive system | Ring USM |
| Filter size | 52 mm (Drop-in) |
| Maximum magnification | 0.17x |
| Minimum aperture | f/32 |
| Diaphragm blades | 9 |
| Dust and moisture resistance | Supported |
| Weight | 2890 g (Approx.) |
| Included lens cap | Lens Cap E-180E & Lens Dust Cap RF (included) |
| Included lens hood | Lens Hood ET-155 (WIII) (included) |
| Separate lens hood | Lens Hood ET-155B (sold separately) |
| Included lens case | Lens Case LS400 (included) |