Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 156)

Lens Aberration Correction
Peripheral Illumination Correction
Distortion Correction
Digital Lens Optimizer
Chromatic Aberration Correction
Diffraction Correction
Vignetting, image distortion, and other issues may be caused by lens optical characteristics.
The camera can compensate for these phenomena by using [
Lens aberration correction ].
1.
Select [ : Lens aberration correction].
2.
Select an item.
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