[Solved] Iray Canvases: Emissive surfaces not contributing as much to litghting as I expect

Joe827

I am trying to render a specific object frrom a scene as it's own layer for postwork.  This object has some emissive surfaces on it.  Full scene looks great.  However, when I render just the specific object using canvasses and the "beauty setting", the emissive surfaces have a much less intense glow (maybe 25%).  If example images are needed, I can provide.  

I am still learning canvases and I'd really like to be able to render specific objects within a scene without any impact to the lighting of the scene.  Does anyone know how to do this when emissive objects are involved?  Thank you for your time.

nonesuch00

I usually change the  unit of measure from cd/m2 to kcd/m2 for a 1000-fold increase. That is often too bright  then and so decrease the default number from 1500.

Also as your render progresses and more details of light & shadow are added the rendered scene can sometimes be more what you expected.

Joe827

nonesuch00 said:

I usually change the  unit of measure from cd/m2 to kcd/m2 for a 1000-fold increase. That is often too bright  then and so decrease the default number from 1500.

Also as your render progresses and more details of light & shadow are added the rendered scene can sometimes be more what you expected.

I don't think we're talking about the same thing here.  In the full scene render, the emissive surface intensity is exactly what I want.  But when doing a canvas render of a single object, the emissive lighting fades (or is being ignored in some way?).  I will post a side by side comparision to help illustrate what I mean.

barbult

This video might be helpful. Be sure to watch part 2 also.

Joe827

barbult said:

This video might be helpful. Be sure to watch part 2 also.

Thank you.  I will give it a try.

Joe827

Thank you barbult.  I believe that got me over the hump.