Canon EOS M200 Advanced User's Manual page 133

Chromatic Aberration Correction
Chromatic aberration (color fringing around subjects) can be corrected.
[Chromatic aberr corr] is not displayed when [Digital Lens Optimizer] is
z
enabled.
Diffraction Correction
Diffraction (loss of sharpness caused by the aperture) can be corrected.
Depending on shooting conditions, noise may be intensified together with the
z
effects of correction.
The higher the ISO speed, the lower the correction amount will be.
z
For movie recording, [Diffraction correction] will not appear.
z
With "Diffraction correction", degraded resolution due to the low-pass filter, etc.
z
is corrected in addition to diffraction. Therefore, correction is effective even at
an aperture close to the open aperture.
[Diffraction correction] is not displayed when [Digital Lens Optimizer] is
z
enabled.
Lens Aberration Correction
133