Canon EOS 80D Manual (en)

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You can register lens aberration correction data for the lens to the 
camera, or delete registered data from the camera. Note that you do not 
have to register correction data for an EF-M lens.
For 
, you can also register data for the Digital Lens 
Optimizer (hereinafter DLO).
For 
(firmware version 1.3.0 or later), lens aberration correction 
data for EF Cinema lenses (CN-E lenses) can also be registered to the 
camera.
1
Click [Register lens aberration correction data].
The [Register lens aberration correction data] window appears.
Registering Lens Aberration Correction 
Data for the Lens in the Camera
1D X Mk II
5D Mk IV
1D C
1D X Mk II
5D Mk IV
2
Select the lens category for which you want to 
register correction data.
Register lens data window
A list appears showing only the selected lens category.