So this is an odd question, born out of a commercial photography mind-set. Probably something really easy.
I have an interior scene that contains an out-of-view skylight that is running a bit too bright. The scene is lit with a single HDRI. Of course I can make the hole somewhat smaller, or maybe even a plane to flag of some of the light, but is there a material that lets light pass through it, plus the ability to control how much light passes through? I’ve heard of the 2-sided translucent material, but I don’t know if that’s what I’m looking for.
I don’t see where you can adjust the opacity of a colormap unless I’m missing something. Using a plane is the best idea for now, but it can change the dynamics of the opening to block part of it off. Hmmm…
What abut just applying a unique glass material to the skylight and adding a bit of gray/black to the fog color? That’ll reduce the light coming through.
Now that’s a great idea! With vraycolor in an opacity slot, I couldn’t figure that out, even with a gray diffuse. I tried unchecking the diffuse map too. I’ll have to play around with that more when I can. I *really* like the glass idea though. Thanks for that.
there is essentially no difference between using glass ( with a grey colour in the fog colour slot) and a material with a grey colour in the opacity slot. its just a change of slots.
plus with the glass material you will need a thickness to the glass to get the fog working , and calculate refractions and fog attenuation.
tbh im not sure which would render faster, but the opacity option is easier to set up and requires only a single polygon. in what sense could you not figure it out?
I wasn’t sure about a value in the difuse channel, or if you have nothing, and only a diffuse color in the VRayColor Map? If you assign a value in VRayColor, what do you use? Black? That would make the most sense I guess, because you would then adjust the opacity of the opacity map?
Keep the diffuse black so it wont bounce any light.
Is your Vraycolor set to be full white?
You can also leave the opacity value at 100% and just control the transparency buy adjusting your vraycolors values.
Vraycolor is set to whatever the default is. It sounds like there’s two ways to adjust the opacity then? I would think that leaving VRay color at white and adjusting the opacity would make the most sense… I’ll give it a try. Thanks!
if you want to use the map percentage spinner to adjust the opcaity, you have to put a black map (or any colour *other* than white) in the slot for it to work. white is 100% opaque, same as no map. so the spinner would be adjusting between opaque and.. opaque.
