User Guide

ACDSee™ Pro User Guide
100
Adding and removing image noise
About noise and noise reduction
Image noise looks like random black, white, or colored pixels in an area of a photo where there should
be solid color, such as a dark night sky. In digital photography, noise is typically more visible in the
dark areas of a photo.
There are many causes of image noise. You will increase image noise if you use a high ISO setting (such
as ISO 400) to capture a photo, or if you extend the exposure time. (You would typically use a high ISO
setting and extend exposure time to take a photo in low light.) However, image noise can be caused
Radial Produces blur around a center point. Click the image to set the center
point.
Amount Specifies the amount of blur. Move the slider to the right to
intensify the effect.
Clockwise Specifies clockwise blur.
Counter-
clockwise
Specifies counter-clockwise blur.
Horizontal
position
Specifies the blur's center point on the horizontal axis.
Vertical
position
Specifies the blur's center point on the vertical axis.
Spread Produces a smeared or frosted blur.
Amount Specifies the amount of blur. Move the slider to the right to
intensify the effect.
Zoom Produces inward or outward blur to or from a center point.
Amount Specifies the amount of blur. Move the slider to the right to
intensify the effect.
Zoom in Creates a blur that zooms in to the image's center.
Zoom out Creates a blur that zooms out from the image's center.
Horizontal
position
Specifies the blur's center point on the horizontal axis.
Vertical
position
Specifies the blur's center point on the vertical axis.