User's Manual

Photomatix Pro 5.0 User Manual 8
Deghosting Options
Deghosting addresses the problem of artifacts that appear when
combining the bracketed images of a dynamic scene� For
example, if the moving subjects are people walking, the people
will appear multiple times in the combined image, once for each
frame, faded and in a dierent position as if they were “ghosts”�
This is why artifacts that arise from movement in a scene are
commonly referred to as “ghosting” and the techniques to
eliminate them are referred to as “deghosting”�
Show options to remove ghosts activates the Deghosting Options window, which will open after you
select your merge to HDR options and then click the Align & Show Deghosting button� The Deghosting
Options window provides an adjustable image-wide Automatic Deghosting algorithm and, for more control
over deghosting, a manually applied Selective Deghosting Tool�
Noise Reduction Options
The Reduce noise on option processes source
photos with a high-quality noise reduction
algorithm, and is recommended when processing
RAW les directly in Photomatix� Noise reduction
is typically most helpful in dark areas of the source
images, and these dark areas are more prevalent in
the underexposed
and, sometimes, in the normally exposed frames�
With this in mind, you can use the Reduce noise on
menu to specify that noise reduction be applied only to the darkest images in the bracketed set� Or, if you
wish, noise reduction can be applied to all images in the set�
Strength: Increases or decreases noise reduction strength relative to the automatically determined default
strength value, which is based on the noise level in the image� Values range from 50% to 150%�
Reduce Chromatic Aberrations
The Reduce Chromatic Aberrations option automatically corrects color fringing due to chromatic
aberrations of the lens� Checking this option is recommended, given that chromatic aberrations tend to show
around high contrast edges, and are particularly an issue for HDR images�
Noise reduction options
The deghosting option is effective when
you apply a Tone Mapping method (Details
Enhancer, Contrast Optimizer, Tone
Compressor) or the Fusion/Natural method. It
is not effective for the other Exposure Fusion
methods.
Note