User manual

Image Effects
Page 24
green and blue.
Auto profile
Automatically reduces noise. The regulators are set to an optimal
value.
Add Noise tab
Noise levels
Defines the level of general noise increase.
5.6 Sharpen Area
Nero PhotoSnap lets you sharpen or blur the image. The sharp effect is achieved with the
Unsharp masking filter, the unsharp or blur effect with Gaussian blur. The impression of
sharpness results from images with a great many tone value changes, i.e. from the contrast
between two areas. The more angular and different in tone value these areas are, the
sharper the transition appears.
Fig. 8: Sharpen area
The following entry options are available in the Sharpen area:
Unsharp masking
Size
Defines how many pixels should be included in the sharpening
calculation.
Amount
Defines the degree of contrast removal.
Threshold
Defines from which edge contrast sharpening should occur.
Gaussian blur tab
Size
Defines how many pixels in an area should be included in the
unsharp calculation.
There is no regulator mixing for sharpening that applies to all images. The optimal regulator
mixing must be determined by trial and error.