Digital Light & Color

This is just for the record: I've been introducing a friend with no experience in image processing to the wonders of PWP. She likes Levels and Colour a lot, because it can adjust all major aspects of the image with little fuss. The only thing that she lacks is the ability to easily change the midton...

How to explain it: The working colour space is AdobeRGB; the monitor is not quite calibrated, but it has about right gamma; the Monitor Profile is set to sRGB; the image file is in AdobeRGB space. On the monitor, the dark pixels below lower ~4% (pixel values 0 to 9, in 8bit) are all blocked to black...

I think that showing clipping in HSV-V and HSL-L would be most practical, and these are colour coordinates PWP uses most often anyway: between the two I would know which areas are pure white, maxed out in at least one RGB channel, or pure black. If thresholds were user-selectable I could identify ar...

I find it v. useful to map in preview which pixels are maxed out or blocked. In RAW, there is 'show clipped pixels' switch. It inverts pixels that are 0% and 100% in HSV-V or HSL-L (I think), but only if dynamic range black and white point sliders are moved beyond 0-100% range, even if the histogram...

Mark, Thanks! I've tried the PhaseOne generic camera icc profiles (125Mb download to get 215Kb profile - are there any other sources of generic camera profiles?). They seem to work, but I'm not sure if I understand when exactly in the RAW processing they are applied. Two observations: - when I tried...

Could someone offer a brief explanation as to what a Camera Colour Profile is, how to make it, how and when it is used in the RAW processing sequence and what happens when it is set to none?

Cheers!

Thanks Den - I was afraid that the guides were hard-wired. Awesome, I just added the Thirds guide and it works - it's almost like joy of programming...

Could 'all thirds', displaying all 4 lines be added to the Crop/Add Border and under right-click/Grid guide selection?

One reason I was interested was my quest of reducing chroma noise. Another is that cloning H,S,V(L) separately can be quite useful in editing, I think. Paint tool has this ability, but only for cloning solid values of the channels.

Just want to make sure that there is no other way: to copy saturation and hue, but not value from one image to another I need to split them in channels and recombine as appropriate? Would adding a 'colour blend' mode(s) to Composite or perhaps hue/sat only mode to Clone make any sense?