Canon EOS 5DS R Instruction Manual - Page 188

3 Correction of Lens Peripheral Illumination and Aberration Peripheral light fall-off is a phenomenon that makes the image corners look darker due to the lens characteristics. Color fringing along subject outlines is called chromatic aberration. This lens aberration and light fall-off can be corrected. By default, Peripheral illumination and Chromatic aberration correction are set to [Enable]. If [Cannot correct - no data] is displayed, see "Lens Correction Data" on the next page. Peripheral Illumination Correction 1 Select [Lens aberration correction]. Under the [z1] tab, select [Lens aberration correction], then press . 2 Select the setting. Check that [Correction data available] is displayed for the attached lens. Select [Peripheral illumin.], then press . Select [Enable], then press . 3 Take the picture. The image will be recorded with the peripheral illumination corrected. Depending on shooting conditions, noise may appear on the image periphery. The correction amount applied will be lower than the maximum correction amount settable with Digital Photo Professional (EOS software, p.520). The higher the ISO speed, the lower the correction amount will be. 188