Canon EOS 50D - Manual (Page 76)

76
Due to the lens characteristics, the four corners of the picture might look
darker. This is called lens light fall-off or drops in peripheral illumination.
This can be corrected. For JPEG images, lens light fall-off is corrected
when the image is captured. For RAW images, it can be corrected with
Digital Photo Professional (provided software).
1
Select [Peripheral illumin.
correct.].
Under the [1] tab, select
[Peripheral illumin. correct.], then
press <0>.
2
Check the screen.
On the screen, check that the
attached lens’ “Correction data
available” is displayed.
If “Correction data not available” is
displayed, see “About the Lens
Correction Data” on the next page.
Turn the <5> dial to select [Enable],
then press <0>.
3
Take the picture.
The image will be displayed with the
corrected peripheral light.
3 Lens Peripheral Illumination Correction
Enable Disable
Peripheral illumination correction
COP
Y