Canon EOS Rebel T1i Digital Photo Professional 3.8 for Macintosh Instruction M - Page 95

Reducing Noise, Adjust an image.

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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. 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 1Basic Operation 2Advanced Operation 3Advanced Image Editing and Printing 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. 4 Processing Large Numbers of Images 5Editing JPEG/TIFF Images Reference 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 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.76). 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. O For a list of [NR Preview] window functions, refer to p.113. Index 94

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94
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
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.
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.
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.
To set the same noise reduction level for several images
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
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.76)
. 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.
O
For a list of [NR Preview] window functions, refer to
p.113
.