Canon EOS RP Mirrorless Camera - Manual (Page 125)

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Correction of Lens Aberrations due to Optical Characteristics
Digital Lens Optimizer
Various aberrations from lens optical characteristics can be corrected, along
with diffraction and low-pass filter-induced loss of clarity.
If [Correction data not available] or [ ] is displayed by [Digital Lens
Optimizer] , you can use EOS Utility to add the lens correction data to the
camera. For details, refer to the EOS Utility Instruction Manual.
o Depending on shooting conditions, noise may be intensified together with the
effects of correction. Image edges may also be emphasized. Adjust Picture
Style sharpness or set [Digital Lens Optimizer] to [Disable] as needed
before shooting.
o The higher the ISO speed, the lower the correction amount will be.
o For movie recording, [Digital Lens Optimizer] will not appear. (Correction is
not possible.)
o Enabling [Digital Lens Optimizer] corrects both chromatic aberration and
diffraction, although these options are not displayed.
o Digital Lens Optimizer is applied automatically in Basic Zone modes when
correction data is registered on the camera.