Canon EOS 70D Instruction Manual page 332

R Processing RAW Images with the CameraN
Peripheral Illumination Correction, Distortion Correction, and
Chromatic Aberration Correction
To execute peripheral illumination correction, distortion correction, and
chromatic aberration correction with the camera, the data of the lens used
for the shot must be registered in the camera. If the lens data has not been
registered in the camera, use EOS Utility (provided software, p.456) to
register the lens data.
Processing RAW images in the camera will not produce the same results
as processing RAW images with Digital Photo Professional.
When processing images with [Distortion correction] set to [Enable],
AF point display information (p.294) and Dust Delete Data (p.341) will
not be appended to the image.
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