Canon EOS-1D X Mark III EOS-1DX Mark III Advanced User Guide - Page 482
Lens aberr correction, Peripheral illum corr, Distortion correction, Digital Lens Optimizer,
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Lens aberr correction • Peripheral illum corr ( ) A phenomenon that makes the image corners look darker 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 ( ) and check the four corners. Less correction is applied than for maximum correction with Digital Photo Professional (EOS software, ). If the effects of correction are not apparent, use Digital Photo Professional to apply the peripheral illumination correction. • Distortion correction Image distortion due to lens characteristics can be corrected. If [Enable] is set, the corrected image will be displayed. The image periphery will be trimmed in the corrected image. Since the image resolution may look slightly lower, adjust the sharpness with the Picture Style's sharpness parameter setting as necessary. • Digital Lens Optimizer Correct lens aberration, diffraction, and low-pass filter-induced loss of resolution by applying optical design values. To check the effect of setting this option to [High] or [Standard], use magnified view ( ). Without magnification, the effect when Digital Lens Optimizer is set to [High] is not applied. Selecting [High] or [Standard] corrects both chromatic aberration and diffraction, although these options are not displayed. • Chromatic aberr corr ( ) 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 ( ). • Diffraction correction 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 ( ). 482