Canon Kit08-T1i-1855IS-55250IS Digital Photo Professional 3.6 for Macintosh In - Page 59
Reducing Noise
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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 Adjust an image. Drag the sliders right 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. 3 Click the [Apply] button. ¿ Noise reduction is applied to the image and the image is redisplayed. 4 Display the image in the [100% view] or [200% view]. ¿ You can check the noise reduction effect. O In the [50% view] or [Fit to window] display, it may be difficult to check the noise reduction effect. Introduction Contents at a Glance Additional information O The noise reduction function does not work Noise reduction cannot be applied when [Viewing and saving RAW images] (p.72) is set to [High speed] in the [Preferences] window. Select [High quality] to reduce noise. O 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. 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 Preferences (p.75). • 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 tool palette functions, refer to p.110. 5Editing JPEG/TIFF Images Reference Index 58