Canon EOS RP Advanced User Guide - Page 330

Processing RAW Images with the Camera [ ] Chromatic aberration correction (=126) Chromatic aberrations (color fringing along the subject's outline) due to the lens characteristics can be corrected. If [Enable] is set, the corrected image will be displayed. If the effect is difficult to discern, magnify the image (=299). [ ] Diffraction correction (=126) The diffraction by the lens aperture degrading the image sharpness can be corrected. If [Enable] is set, the corrected image will be displayed. If the effect is difficult to discern, magnify the image (=299). ooProcessing RAW images in the camera will not produce exactly the same results as processing RAW images with Digital Photo Professional (EOS software). ooIf you perform [Brightness adjustment], noise, banding, etc. may be intensified with the effects of adjustment. ooWhen [Digital Lens Optimizer] is set, 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. ooThe effect of the lens aberration correction varies depending on the lens used and shooting conditions. Also, the effect may be difficult to discern depending on the lens used, shooting conditions, etc. 330