EF 400 mm f/5.6L USM vs Kenko 400 mm f/8 Mirror
Canon
EF 400 mm f/5.6L USM
Kenko
Kenko 400 mm f/8 Mirror
Here we are comparing the Canon EF 400 mm f/5.6L USM and the Kenko Kenko 400 mm f/8 Mirror. The Canon EF 400 mm f/5.6L USM is a 400mm telephoto prime lens with a maximum aperture of f/5.6, released in 1993. The Kenko Kenko 400 mm f/8 Mirror is a 400mm telephoto prime lens with a maximum aperture of f/8, released in 2015.
There is a 22 years difference between the Canon EF 400 mm f/5.6L USM and the Kenko Kenko 400 mm f/8 Mirror — the newer design may benefit from more recent optical engineering and coatings.
Below you will find a detailed side-by-side comparison of their specifications, features, and key differences.
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| Compare | Fastest Aperture | Lightest |
|---|---|---|
| Mount | ||
| Sensor Size | Full Frame | Full Frame |
| Best For | Wildlife | Wildlife |
Price & Availability | ||
| Shop | ||
Optical Specifications | ||
| Focal Length | 400 mm | 400 mm |
| Aperture | f/5.6 | f/8 |
| Aperture Blades | 8 | - |
Features | ||
| Autofocus | Yes | No |
| Image Stabilization | No | No |
| Weather Sealed | Yes | No |
Close-up Performance | ||
| Min. Focus Distance | 3.5 m | 1.15 m |
| Max. Magnification | 0.12x | - |
Physical Specifications | ||
| Weight | 1250 g | 340 g |
| Length | 256.5 mm | 74 mm |
| Diameter | 90 mm | 82 mm |
| Filter Thread | 77 mm | 67 mm |
Price & Availability | ||
| Release Year | 1993 | 2015 |
| Shop | ||
Shopping links may contain affiliate codes that support this site at no extra cost to you.
Comparing Canon EF 400 mm f/5.6L USM (400 mm, f/5.6) and Kenko Kenko 400 mm f/8 Mirror (400 mm, f/8).
Kenko Kenko 400 mm f/8 Mirror is the lightest at 340 g, Canon EF 400 mm f/5.6L USM weighs 1250 g.
Canon EF 400 mm f/5.6L USM offers the fastest maximum aperture at f/5.6, allowing for better low-light performance and shallower depth of field.
Kenko Kenko 400 mm f/8 Mirror can focus closest at 1.15 m minimum focus distance.
Canon EF 400 mm f/5.6L USM is weather-sealed for challenging conditions.
Use the detailed comparison table below to see all specifications side-by-side and find the perfect lens for your photography needs.
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