hi all,

with due respect to each contribution, I sadly see my serious, honest and humble question hijacked by posts which do not address the question at hand, and tend to get personal / insulting in cases. So:

• please respond to me, and not to each other. Consider me chairing the threat, or something like that. And please do not suppose on peoples equipment, skills, knowledge etc which you can't back up and which does not contribute to answering the question

• please stick to the topic.

So the question is NOT:

• what is the use of gamma / curved brightness corrections when sending images to print or displays, and why do those output devices need it, and why do JPG and MPG have embedded profiles, and everything about color spaces. I know it all, thanks, and it has nothing to do with the net effect of the Poser GC process.
  In addition, I like to know to what extent a red input (texture, color) is turned into red output (render result) by RGB/HSV-measuring both in Photoshop or alike. I don't care if an image red shows purple on my display due to whatever colorcrisis is going on. I do care whether input and output shows same or different purples, and why (my monitors are spiderpro calibrated every quarter btw). 

• can Poser GC be (ab)used for brightness corrections to get more detail in the darks, and to make it look good / better. Yes it can, it has some disadvantages, and in my opinion Exponential Tonemapping is a better way to go. Perhaps Photoshop Levels / Curves adjustment is a good alternative too.

Again, the question is:

since Poser GC is a sandwiching process, which darkens a color (gamma curve as in earlier BB post), then renders (usually darkens again thanks to shadowing) and applies tonemapping if requested, and then brightens the final image ( 1 / gamma curve), what is the practical use (in addition to tonemapping) in scenes which mimic indoor portraying studio conditions (= without IDL/SkyDomes but with lighting rigs for key/fill/... lighting)?

and a minor second question is: if you think Poser GC is to be preferred over exponential tonemapping / adjustment in post for image dynamic range correction, then why so?

Preferrably to be illustrated with renders and measurement result to stimulate further investigation.

Thanks in advance, to be continued...

 

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though