Canon EOS Rebel T1i Digital Photo Professional 3.8 for Macintosh Instruction M - Page 60

Reducing Noise, Click the [NR Preview] button.

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Reducing Noise You can reduce noise that arises in RAW images shot at night or with a high ISO speed. NR is an abbreviation for "noise reduction". 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. Navigator window Enlargement display position Drag the sliders NR check window O 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. O The noise reduction effect can be checked when an image is displayed at 100% in the NR check window. O 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. Introduction Contents at a Glance The noise reduction function does not work Noise reduction cannot be applied when [Viewing and saving RAW images] (p.73) is set to [High speed] in the [Preferences] window. Select [High quality] to reduce noise. To set the same noise reduction level for several images After selecting multiple images in the main window, you can set the same noise reduction level for the images without displaying the [NR Preview] window, by adjusting the noise reduction level in the [NR/Lens/ ALO] tool palette (p.112) using the [Luminance noise reduction] and [Chrominance noise reduction] sliders, and then clicking the [Apply] button. 1Basic Operation 2Advanced Operation 3Advanced Image Editing and Printing 4 Processing Large Numbers of Images O You can set the default noise reduction beforehand, using [Default noise reduction settings] in the [Tool palette] tab sheet in the [Preferences] (p.76). • 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. O If [Luminance noise] has been set, resolution may be reduced along with reduction of noise. O If [Chrominance noise] has been set, color bleeding may occur along with reduction of noise. O For a list of [NR Preview] window functions, refer to p.113. 5Editing JPEG/TIFF Images Reference Index 59

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59
1
2
3
4
5
Introduction
Contents at
a Glance
Basic
Operation
Advanced
Operation
Advanced
Image Editing
and Printing
Editing
JPEG/TIFF
Images
Index
Processing
Large Numbers
of Images
Reference
You can reduce noise that arises in RAW images shot at night or with a
high ISO speed.
NR is an abbreviation for “noise reduction”.
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.
O
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.
O
The noise reduction effect can be checked when an image is
displayed at 100% in the NR check window.
O
You can change the display position of the NR check window by
dragging the enlargement display position in the navigator
window.
Navigator
window
Enlargement
display
position
NR check window
Drag the
sliders
4
Click the [Apply] button.
¿
Noise reduction is applied to the image and the image is
redisplayed.
Noise reduction cannot be applied when [Viewing and saving RAW
images]
(p.73)
is set to [High speed] in the [Preferences] window.
Select [High quality] to reduce noise.
After selecting multiple images in the main window, you can set the
same noise reduction level for the images without displaying the [NR
Preview] window, by adjusting the noise reduction level in the [NR/Lens/
ALO] tool palette
(p.112)
using the [Luminance noise reduction] and
[Chrominance noise reduction] sliders, and then clicking the [Apply]
button.
The noise reduction function does not work
To set the same noise reduction level for several images
O
You can set the default noise reduction beforehand, using
[Default noise reduction settings] in the [Tool palette] tab sheet in
the [Preferences]
(p.76)
.
•
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.
O
If [Luminance noise] has been set, resolution may be reduced
along with reduction of noise.
O
If [Chrominance noise] has been set, color bleeding may occur
along with reduction of noise.
O
For a list of [NR Preview] window functions, refer to
p.113
.
Reducing Noise