I have an issue in poser 12 where, if I change a light color to a gray like 190,190,190 for the RGB, the material color shifts to a red tone. Does this all the time and I have to play wack a mole to stop this. I have tried several settings and cannot get this to stop. The diffuse color of the light is correct but on the light's material color it does the red shift. I then end up with red tones in my render.

Anyone else experience this? I cannot figure out what changes it. I set the gray color then a second later it red shifts.

Poser loves to bug out with some things that have the exact number for R, G and B. Try 190 190 189 to see if it changes - I've never had it happen with material colors but I get Subsurface Scattering turning itself off when the colors are all the same value...

Well its not the material per say. Its basically the color of the light its just set as the material color in the color room or the color circle on the light. Poser seems to introduce a saturation value which then shifts the color. Maybe all lights need a little color and can't be 100% gray.

Attach a simple color node to the light channel and make the changes on that chip.  I seem to recall that there is a bug associated with applying a direct color to the light node chip.

BTW, are you doing Firefly or Superfly renders?  I definitely do not see it in Superfly.  If you can screencap what you are seeing in the renders and the light node settings maybe we can visualize what is happening.

hborre posted at 11:21 AM Mon, 27 June 2022 - #4440444

BTW, are you doing Firefly or Superfly renders?  I definitely do not see it in Superfly.  If you can screencap what you are seeing in the renders and the light node settings maybe we can visualize what is happening.

Its in firefly

Here are pics of what I do.

I did find I can edit my preset light file and set the values there and as long as I don't change light colors in the UI or bring up the material for the lights things seem fine.

this sounds like something you might report as a bug. https://support.posersoftware.com/

This may seem like an isolated case on your part.  I don't see this happening on my end.  My only recommendation is to reinstall the software if you are inclined to do so.  Maybe try resetting P12 back to factory default before a reinstallation to correct the problem.  You could file a support ticket but I don't think there is much the techs can do if they can't replicate the problem.

I think I've isolated the problem to if you set the color of the light via the material room node "color" somehow the color picker is always adding a saturation to the color value. So you can never pick a gray.

But if you set the color of the light manually to a gray, the color node appears to get ignored and uses the value set. I recreated my lights since I noticed the default lights from poser do not exhibit this trait.

I still believe there is a corruption in your installation that is throwing off the light color chip for some reason.  I am not noticing what you're describing, yet I am seeing some inconsistencies between nodes that I shouldn't be getting.  I'm hoping it's not a major bug in the Material Room.

hborre posted at 7:54 PM Tue, 28 June 2022 - #4440508

I still believe there is a corruption in your installation that is throwing off the light color chip for some reason.  I am not noticing what you're describing, yet I am seeing some inconsistencies between nodes that I shouldn't be getting.  I'm hoping it's not a major bug in the Material Room.

When I messed with the default lights on another machine this effect didn't happen but after a while it did occur. I think there is a bolt loose in there somewhere. could be its also an effect of direction lights vs say spot lights. I use direction lights.

I did verify with the Poser devs that this is a bug that somehow got into poser 12.