Canon ver 3.5 Manual De Usuario

57

You can reduce noise that arises in RAW images that have been shot at 
night or with a high ISO speed.
NR is an abbreviation for “noise reduction”.

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You can set a noise reduction level from within a range of 0 to 20. 
The larger the setting, the larger the noise reduction effect.

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Noise reduction is applied to the image and the image is 
redisplayed.

Drag the sliders right

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You can check the noise reduction effect.

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In the [50% view] or [Fit to window] display, it may be difficult to 
check the noise reduction effect.

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The noise reduction function does not work
Noise reduction cannot be applied when [Viewing and saving RAW 
images] 

 is set to [High speed] in the [Preferences] window. 

Select [High quality] to reduce noise.

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To check the noise reduction effect, enlarge the image and 
display it
Because noise reduction effect is difficult to see in the [50% view] and 
[Fit to window] displays, use [100% view] or [200% view] to check the 
noise reduction.

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You can set the default noise reduction beforehand, using 
[Default noise reduction settings] in the [Tool palette] tab sheet in 
Preferences 

(p.74)

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• When [Apply camera settings] is selected, you can pre-set a 

noise reduction level that suits the camera settings beforehand 
as the default.

• When [Set as defaults] is selected, you can pre-set a preferred 

default setting for the noise reduction level beforehand. This is 
particularly useful for applying noise reduction to all the images 
in a folder at once, such as batch noise reduction for images 
with high ISO speeds.

However, for images with recipes attached, the noise level 
recorded in the recipe will be applied.

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If [Luminance noise] has been set, resolution may be reduced 
along with reduction of noise.

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If [Chrominance noise] has been set, color bleeding may occur 
along with reduction of noise. 

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For a list of tool palette functions, refer to 

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COP

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