AW: Weiteres zu Blooming
Hallo,
habe mir damals den Text von der Seite
http://www.sd3.info/pf828/ kopiert, einige allgemeine Hinweise und außerdem Tipps für die Einstellungen der Regeler.
Das Tool war zwar für eine Sony, funktioniert für meine Fuji F10 auch sehr schön.
Die speziellen Hinweise waren - mit meiner Zuordnung auf Deutsch:
Range - R/G/B (Bereich)
Determines how fast the fringe decays as you move away from an overexposed source. The defaults work well for most 8mpix images from the 828, but can be changed if the image is downsampled etc. For example, for a 5mpix image, you'd set them to about 80% of the defaults. I doubt the difference would be noticeable. Generally the G value should be left alone.
Intensity - R/G/B (intensität)
Determines how strongly the estimated fringe values are corrected. If you see a lot of purple remaining with the defaults, try increasing the value. You can also vary the color balance of fringes by adjusting the R and B values. The G value is currently not used.
Highlight Threshold (Schwel)
The threshold value that PFree will regard as an overexposed highlight producing fringe. Normally this would be 255, though I've observed a few cases where the maximum green value is 253, not 255 (JPEG or interpolation artifact?) so this is set to 252 for safety. I've observed fringing around normally exposed high contrast edges (200 or so), so you can try setting lower values to see what happens.
Highlight Scale (Skal)
This represents the scale (in pixels) of "interesting" highlights producing fringe. Bright spots smaller than this value in diameter will be substantially attenuated to they don't produce much fringe. This can be helpful if you have a few tiny specular highlights you want to leave alone, and one big blown-out area to correct strongly. If you set this to 1, all highlights are treated as equally bright regardless of size.
Highlight Base (Radius)
Like the rise rate above, this controls how severely small highlights are attenuated before estimating the fringe they produce. Setting this to 0 maximizes the attenuation of small sources. As with the Rise Rate above, it may be necessary to play with the intensities after changing this control.
Saturation (Sätt)
This is not saturation in the color sense. Rather it controls the dependence of the rate of decay of the fringe as you move away from a highlight on the ambient luminance level. It looks to me like fringes diffuse farther in areas of high illumination, becoming a general bluish fog in some cases (this would seem to indicate an opto-electronic origin, not a purely optical scattering effect). Setting this to 256 means the fringe decays equally fast regardless of illumination.
Gruß, Stefan
