Canon EOS 5D Mark III Instruction Manual (en)

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Peripheral light fall-off occurs in lenses whose characteristics make the 
image corners look darker. Color fringing along subject outlines also is a 
chromatic aberration. Light fall-off and color fringing can be corrected. 
The default setting is [Enable] for both corrections.
1
Select [Lens aberration 
correction].
 
Under the [z1] tab, select [Lens 
aberration correction
], then press 
<
0>.
2
Select the setting.
 
Check that [Correction data 
available
] is displayed for the 
attached lens.
 
Turn the <5> dial to select 
[Peripheral illumin.], then press 
<
0>.
 
Select [Enable], then press <
0>.
 
If [Correction data not available] is 
displayed, see “About the Lens 
Correction Data” on page 151.
3
Take the picture.
 
The image will be recorded with the 
peripheral illumination corrected.
3
 Lens Peripheral Illumination / Chromatic Aberration Correction
Peripheral Illumination Correction
Depending on shooting conditions, noise may appear on the image periphery.
 
The correction amount applied will be slightly lower than the maximum 
correction amount settable with Digital Photo Professional (provided 
software).
 
The higher the ISO speed, the lower the correction amount will be.