EF 400 mm f/4 DO IS II USM vs Kenko 400 mm f/8 Mirror
Canon
EF 400 mm f/4 DO IS II USM
Kenko
Kenko 400 mm f/8 Mirror
Here we are comparing the Canon EF 400 mm f/4 DO IS II USM and the Kenko Kenko 400 mm f/8 Mirror. The Canon EF 400 mm f/4 DO IS II USM is a 400mm telephoto prime lens with a maximum aperture of f/4, released in 2014. 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 1 year difference between the Canon EF 400 mm f/4 DO IS II 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.
Shopping links may contain affiliate codes that support this site at no extra cost to you.
| Compare | Fastest Aperture Image Stabilization | 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/4 | f/8 |
| Aperture Blades | 9 | - |
Features | ||
| Autofocus | Yes | No |
| Image Stabilization | Yes | No |
| Weather Sealed | No | No |
Close-up Performance | ||
| Min. Focus Distance | 3.3 m | 1.15 m |
| Max. Magnification | - | - |
Physical Specifications | ||
| Weight | 2100 g | 340 g |
| Length | 128 mm | 74 mm |
| Diameter | 232.7 mm | 82 mm |
| Filter Thread | 52 mm | 67 mm |
Price & Availability | ||
| Release Year | 2014 | 2015 |
| Shop | ||
Shopping links may contain affiliate codes that support this site at no extra cost to you.
Comparing Canon EF 400 mm f/4 DO IS II USM (400 mm, f/4) 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/4 DO IS II USM weighs 2100 g.
Canon EF 400 mm f/4 DO IS II USM offers the fastest maximum aperture at f/4, 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/4 DO IS II USM includes image stabilization.
Use the detailed comparison table below to see all specifications side-by-side and find the perfect lens for your photography needs.
Discover the best lenses for your camera mount and photography style
Top-rated Canon EF lenses optimized for Wildlife Photography
Top-rated Micro Four Thirds lenses optimized for Wildlife Photography
Top-rated Sony E lenses optimized for Wildlife Photography
Explore all curated lens recommendations by mount and photography type
