Canon EOS-1D X Manual (en)

Telephoto lenses
EF 135mm f/2L USM
EF 200mm f/2L IS USM 
EF 200mm f/2.8L USM 
EF 200mm f/2.8L II USM
EF 300mm f/2.8L IS II USM
EF 300mm f/4L IS USM
EF 400mm f/2.8L IS II USM
EF 400mm f/4 DO IS USM
EF 400mm f/5.6L USM
EF 500mm f/4L IS II USM
EF 600mm f/4L IS II USM
Zoom lenses
EF 16-35mm f/2.8L USM
EF 16-35mm f/2.8L II USM
EF 17-40mm f/4L USM
EF 24-70mm f/2.8L USM
EF 24-70mm f/2.8L II USM
EF 24-70mm f/4L IS USM
EF 24-105mm f/4L IS USM
EF 28-70mm f/2.8L USM
EF 28-135mm f/3.5-5.6 IS USM
EF 28-200mm f/3.5-5.6 USM
EF 28-200mm f/3.5-5.6
EF 28-300mm f/3.5-5.6L IS USM
EF 70-200mm f/2.8L USM
EF 70-200mm f/2.8L IS USM
EF 70-200mm f/2.8L IS II USM
EF 70-200mm f/4L USM
EF 70-200mm f/4L IS USM
EF 70-300mm f/4-5.6L IS USM
EF 70-300mm f/4.5-5.6 DO IS USM EF 70-300mm f/4-5.6 IS USM
EF 100-400mm f/4.5-5.6L IS USM EF 200-400mm f/4L IS USM
Macro lenses
EF 50mm f/2.5 Compact Macro
EF 100mm f/2.8 Macro USM
EF 100mm f/2.8L Macro IS USM EF 180mm f/3.5L Macro USM
The Digital Lens Optimizer is also available for images shot with 
an extender attached to a compatible lens.
You cannot use the Digital Lens Optimizer with multiple-exposure 
RAW images created on the camera.
EF cinema lenses (CN-E lenses) are not compatible.
Check the status of [Lens data] for [Digital Lens 
[Not Available] is displayed for an image shot with a non-
compatible camera or lens, or for a non-compatible image such 
as a JPEG, TIFF, S-RAW, or M-RAW image. The function cannot 
be used for these images.
If [No] is displayed, proceed to step 2. To use the function, you 
need to download the lens data for the lens used when shooting 
the image. It is recommended that you check the lens used when 
shooting the image beforehand. The lens used can be checked 
using the image information and shooting information displays. 
If [Yes] is displayed, proceed to step 4.
Using the Digital Lens Optimizer