Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 194)

194
Peripheral light fall-off is a phenomenon that makes the image corners
look darker due to the optical characteristics of the lens. Color fringing
along subject outlines is called chromatic aberration. Image distortion
due to the optical characteristics of the lens is called distortion. And
decreased image sharpness due to the aperture is called diffraction
phenomenon. These lens aberrations can be corrected. By default, the
[
Peripheral illum corr ], [ Chromatic aberr corr ], and [ Diffraction
correction ] are set to [ Enable ], and [ Distortion correction ] is set to
[ Disable ].
If the setting screen displays [ Correction data not available ] or the
[ ] icon, it means that the correction data for the respective lens is not
registered in the camera. See “Lens Correction Data” on page 197.
1
Select [Lens aberration
correction].
Under the [ z 1 ] tab, select [ Lens
aberration correction ], then press
< 0 >.
2
Select [Peripheral illum corr].
3
Select [Enable].
Check that [ Correction data
available ] is displayed for the
attached lens.
Select [ Enable ], then press < 0 >.
4
Take the picture.
The image will be recorded with the
peripheral illumination corrected.
3
Correction of Lens Aberrations
Peripheral Illumination Correction