Canon EF 400mm f/2.8L IS II USM - Sample Images
Info and images of the lens:


Introduced: 2011
Optical design: 16 elements in 12 groups
Lens mount: Canon EOS
Covers: Full-frame (24×36mm)
More info can be found here:
http://www.the-digital-picture.com/Reviews/Lens-Specifications.aspx?Lens=741
Review:
http://www.the-digital-picture.com/Reviews/Canon-EF-400mm-f-2.8-L-IS-II-USM-Lens-Review.aspx
Image Origin
ISO: 250
Aperture @: f/2.8
Camera: Canon EOS-1D X
Image Origin
ISO: 200
Aperture @: f/2.8
Camera: Canon EOS-1D X
Image Origin
ISO: 400
Aperture @: f/2.8
Camera: Canon EOS-1D Mark IV
Image Origin
ISO: 640
Aperture @: f/2.8
Camera: Canon EOS-1Ds Mark III
Image Origin
ISO: 100
Aperture @: f/2.8
Camera: Canon EOS-1D X
Image Origin
ISO: 1000
Aperture @: f/2.8
Camera: Canon EOS-1D X
Image Origin
ISO: 100
Aperture @: f/2.8
Camera: Canon EOS 5D Mark III
Image Origin
ISO: ??
Aperture @: f/2.8
Camera: Canon EOS-1D X
Image Origin
ISO: 200
Aperture @: f/2.8
Camera: Canon EOS-1D X
Image Origin
ISO: 200
Aperture @: f/2.8
Camera: Canon EOS-1D X
Image Origin
ISO: 200
Aperture @: f/2.8
Camera: Canon EOS-1D X