Image Filters
Where: Channel | Image Filters
Under Image Filters you will find settings that can improve the overall quality of the images processed in
the system. You may apply unsharp mask to enhance the sharpening of images, while the dust and scratch
filter will greatly reduce the visibility of dust and scratches.
Unsharp mask settings
Where: Channel | Image Filters | Unsharp Mask tab
The Unsharp Mask filter is used for high-end color correction. It sharpens the overall impression of
an image by increasing the contrast of adjacent pixels. Color Factory lets you apply up to four unsharp
masks to images of different size.
By enabling SmartSharp™, you may click the Advanced Settings button to adjust noise and
sharpness sensitivity. The sliders can be adjusted to be less or more sensitive to existing noise and
sharpness in the input image. When noise or sharpness is above the set threshold, no sharpening is
applied. Apart from these settings, you may adjust the amount of sharpening applied in the amount
field on the main tab. When using SmartSharp™ settings, Color Factory will analyze and automatically
select an appropriate radius and smoothness level. Also, if several Unsharp masks have been configured,
SmartSharp will be applied to images of the size specified.
Manually configuring unsharp mask
When choosing to apply an unsharp mask, you can set the print size of the images to which the mask
should be applied (only available if more than one unsharp mask has been configured.) Further, you
may enable sharpening only on edges and details (Use smooth mode) and choose from three levels. This
feature may be used to avoid sharpening existing image noise and thus amplifying it. Similarly, a contrast
limiter filter may be applied to suppress sharpening of dark areas, which often contain more noise.
Smooth mode is recommended as the superior method of avoiding images with much noise.
You should then enter the amount of unsharp mask to apply as well as the radius and threshold. The
amount should generally bet set somewhere between 150% and 200% for high-resolution printed
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