Digital Light & Color

In my previous post, histogram/tone range comparisons where considered only in the HSV color space model. If only HSV-V is considered to establish black/white points [tone range], it is possible that one or more of the R, G, or B channels can be clipped. To preserve maximum image data from a RAW fil...

MikeG... The 'Full Range' of the Levels&Color transform may not be the same as 'Full Range' of the RAW Dialog. I seem to remember that the Levels&Color 'Full Range' will actually clip 0.1% for both the white and black points. Perhaps, JS/Kiril will advise. Perhaps a better confirmation of th...

Correction: (3) the 'Vibrance Mask's white represents 0% saturation, black represents 100% saturation plus the 'Subtract-ed' low saturation ColorRange selection, and the grays map the original saturation gradient from low to high saturations. Should read: (3) the 'Vibrance Mask's white represents 1...

Additional clarifications regarding the 'Vibrance Mask' described above: (1) if your Starting Image is 48-bit color, then the Extract -ed HSV-S channel image will have to be Convert -ed from 16-bit BW to 8-bit BW for use as a mask image. (2) use the default HSV color space for the Mask Tool - Color ...

I have been doing a little more poking around on the internet regarding Vibrance and ElieD's post above seems to best describe this rather loosely defined image charactistic. I also came across something called a 'Vibrance Mask' that may be of interest. It will limit the increase of high saturations...

Most imaging editors make changes for tone/color in the RGB color space model were individual changes in the R, G, B channels may not always be intuititive. PWP's HSV default color space model and the HSL color space model can perhaps be more easily understood and applied since gray tone contrasts [...

Kevin... The 'not responding' after only a partial progress dialog is normal for me too. Since I have a dual core and you a quad-core, I would expect your compute 'mean image' time to be about half which it appears to be for approx. the same pixel dimensions. Since the transform completes, I have le...

For any transform with a 'select mask' button and the Preview is in Auto update mode, the transform Amount can be switched to 0% from its adjusted slider position by "Shift-left mouse click Hold" over the 'select mask' button. If a mask is present, the the Mask white/black amounts are swit...

Jonathan... Somewhat related to Simon's OP... would you recommend a quad-core processer? I have an AMD Athlon64x2 6000+ processer and 32bit Vista, that takes approx. 2 minutes for the BilateralSharpen transform to compute a 'mean image' for a 3456x2314 pixel image when the Blur Radius is set to maxi...

Perhaps one or more of the following may be of help: (1) if the Browser is open, resize it to only show one row of thumbnail images to give more room in the program's working space. I prefere a single vertical row on the left side of the monitor. (2) check to ensure that your monitor settings are at...