Reducing Noise - Canon EOS 20Da Instruction Manual

Reducing Noise

You can reduce noise that arises in JPEG and TIFF images that have
been shot at night or with a high ISO speed.
1
Select the [NR/Lens/ALO] tab sheet from the tool
palette in the edit window or edit image window.
2
Click the [NR Preview] button.
The [NR Preview] window appears.
3 Adjust an image.
NR check window
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.
The noise reduction effect can be checked when an image is
displayed at 100% in the NR check window.
You can change the display position of the NR check window by
dragging the enlargement display position in the navigator
window.
4 Click the [Apply] button.
Noise reduction is applied to the image and the image is
redisplayed.
Navigator
window
Enlargement
To set the same noise reduction level for several images
display
position
After selecting multiple images in the main window, you can set the
Drag the
same noise reduction level for the images without displaying the [NR
sliders Preview] window, by adjusting the noise reduction level in the [NR/Lens/
ALO] tool palette
[Chrominance noise reduction] sliders, and then clicking the [Apply]
button.
If [Luminance noise] has been set, resolution may be reduced
along with reduction of noise.
If [Chrominance noise] has been set, color bleeding may occur
along with reduction of noise.
You can set the batch processing settings for noise reduction
beforehand, using [Default noise reduction settings] in the [Tool
palette] tab sheet in the [Preferences] (p.79). 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, where images have a recipe attached, the
noise level recorded in the recipe is applied.
For a list of [NR Preview] window functions, refer to p.116.
(p.115) using the [Luminance noise reduction] and
Introduction
Contents at
a Glance
1
Basic
Operation
2
Advanced
Operation
Advanced 3
Image Editing
and Printing
Processing 4
Large Numbers
of Images
Editing
5
JPEG/TIFF
Images
Reference
Index
97