PWP7.0.5-32bit -- Color Curves channel curve changes
Posted: March 5th, 2013, 10:24 am
The following will consistently occur for either 24 or 48 bit color images as Input to the Color Curves transform,,,
(1) open a 24 or 48-bit color image
(2) open Color Curves with Auto Preview checked; select the HSV color space:
...(a) select the V channel; make a curve change. Preview may or may not update. An Apply/OK will produce an image version equal to Preview. If Preview did not update; 'Reset' and duplicate the curve change. Now Preview updates and an Apply/OK will produce an image version equal to Preview.
...(b) repeat (2)(a) for S and H
(3) repeating (2) for the HSL and RGB color spaces and their respective channels produces the same results...
Note: HSV-V seems to be the only channel that makes a curve change properly the first time.
...den...
Vista 32 Home Premium, SP2, latest version/updates
AMD Athlon 64 x2 6000+ processor
3 GB DDR2 dual channel RAM
2 MB ReadyBoost Cache
500GB hard drive with 100GB free space
(1) open a 24 or 48-bit color image
(2) open Color Curves with Auto Preview checked; select the HSV color space:
...(a) select the V channel; make a curve change. Preview may or may not update. An Apply/OK will produce an image version equal to Preview. If Preview did not update; 'Reset' and duplicate the curve change. Now Preview updates and an Apply/OK will produce an image version equal to Preview.
...(b) repeat (2)(a) for S and H
(3) repeating (2) for the HSL and RGB color spaces and their respective channels produces the same results...
Note: HSV-V seems to be the only channel that makes a curve change properly the first time.
...den...
Vista 32 Home Premium, SP2, latest version/updates
AMD Athlon 64 x2 6000+ processor
3 GB DDR2 dual channel RAM
2 MB ReadyBoost Cache
500GB hard drive with 100GB free space