You had everything correct until you spoke of the lens.

My GC shaders ALSO perform the final gamma correction. The GC shaders do exactly what Poser Pro does - they correct GC in and out. There is no need to use the lens with GC shaders. If you do, you will double correct the final result. If you wish to use the lens with GC shaders, you must re-design the GC shader to skip the final GC out step.

For the same reason, you must not use GC shaders in Poser Pro when you have render GC turned on.

I offered the GC lens as a way to GC an entire scene, without the need to use GC shaders.

But if you are sophisticated and patient and willing to work, the GC shaders are much better than the GC lens. If for no other reason, you have more control.

The GC lens is a good solution for people who have no patience to manually change all materials, even with VSS.

Also, let's be more clear about the Poser version names. There is no "Poser 7 Pro" as you called it. It is called Poser Pro. There is Poser 7 and there is Poser Pro.

Your English is excellent. You have no need to ask for us to excuse it. :)

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)