Focal lengths / APS-C
400mm on APS-C
Frames like 600mm on full frame: 3.4° across, 2.2° top to bottom.
A 600mm eq.
| A 400mm on APS-C | |
|---|---|
| Focal length | 400mm |
| Full-frame equivalent | 600mm |
| Horizontal | 3.4° |
| Vertical | 2.2° |
| Diagonal | 4° |
| Sensor | APS-C 23.5 × 15.6 mm |
| Crop factor | ×1.5 |
| Aspect ratio | 3:2 |
Same framing on other formats
The focal length that matches 600mm full-frame equivalent on each sensor size (crop-factor convention, diagonal).
| Sensor | Focal length | Closest page |
|---|---|---|
| Medium format | 759.5mm | — |
| Full frame | 600mm | 600mm on Full frame |
| APS-C (Canon) | 375mm | — |
| Micro Four Thirds | 300mm | 300mm on Micro Four Thirds |
| 1-inch | 222.2mm | — |
Primes at 400mm for APS-C (1)
| Lens | Focal | Aperture | Mount | Year |
|---|---|---|---|---|
| Fujifilm XF 400mm f/4.5 R LM OIS WR | 400mm | f/4.5 | Fujifilm X | 2026 |
Zooms that reach 400mm (2)
| Lens | Focal | Aperture | Mount | Year |
|---|---|---|---|---|
| Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR | 100–400mm | f/4.5–5.6 | Fujifilm X | 2016 |
| Fujifilm XF 150-600mm f/5.6-8 R LM OIS WR | 150–600mm | f/5.6–8 | Fujifilm X | 2022 |