Originally Posted by
Stagecoach
Thanks Manfred.
For general info regarding PP with some of these .................................
Some time ago I had read that in ACR there is a greater adjustment range available within the 'Brush' tools than what can be achieved in the normal 'Global' tools, but had not previously bothered to investigate this seriously.
As some of these had obvious red channel clipping in the bright yellow areas closest to the sun, No 1 image as a good example, I undertook some testing.
Opening two copies of the same No 1 raw file in ACR with both selected, I placed a colour picker in the area that was shown as clipped. This would then read the same area of both images when opened independently to allow reading comparisons.
On the first image in the 'global' panel I reduced the 'whites' slider by -100 and this changed the sample figure from 255,159,64 to 246,149,59. A large portion of that area still showed highlight clipping.
On the second image in the 'brush' panel I reduced the 'whites' slider by -100 and then painted this over the entire image at 100% flow and density and this changed the sample figure from 255,159,64 to 201,123,50. The entire area then showed no highlight clipping.
Whilst I'm not sure why or how this is achieved it certainly enables far greater control and adjustment of clipped areas that are so difficult to manage at capture time.
Further investigation has shown that this increased adjustment range is only available with the 'whites' and 'blacks' sliders and functions in both 'brush' and 'gradient' modes.