LaserSoft Imaging

I have decided to begin building my own film profiles. The profiles accompanying SilverFast do not seem to be very accurate, at least for the film I work with.

While playing with the gradation curves in Negafix Profile Expert mode, I found the following anomaly.

While moving the middle of the curve to the left side, the left side of the curve can warp rather wildly. The following is a typical example of this warping effect.



To remove the warp, I clicked on the Smooth button. The first click produced this effect:



Nice 'smoothing'

Further clicks on the smooth button did actually smooth the curve though. After approximately 10 clicks, the curve approached a reasonable shape. It's just the first click that hurts

regards
Gregory

SilverFast Gradation Curve Functions

Yes, there is room for further improvement by limiting certain extreme reactions to the movements of curve points!