I’m using vray lens effects for the first time, I want my light sources to bloom & glare but I’m getting unusual results that I can’t figure out. These two images show the lens effect turned on and off, both images were rendered using the same brute force settings. There are two obvious problems one is the fire fly’s that are all over the scene, changing subdivision, bounces and noise seems to make difference in the size or number of these artifacts only turning it off makes a difference. Also adjusting the settings in the lens effects doesn’t appear to make any difference either.
Another issue I’m having is when the lens effect is turned on everything in the scene gets blurry or gets bloomed out. When I adjust the settings to minimize this effect I can get some of it to go away but the bloom & glare effect is minimized to the point that I might as well not have it turned on.
I really need some advice on this as I’ve already spent so much time messing with it if I don’t have enough time to try anything else.
Ok then, so it’s because of that; the subpixel mapping suppresses the fireflies, but the lens effect needs to work with the actual colors in the image. Since the fireflies are typically caused by caustics, you could try to disable the “Refractive GI caustics” option and see if it helps.
Vlado I disabled Refractive GI caustics and that did reduce a lot of the fire fly’s but there are still some present so I tried disabeling reflective caustics as well but it didn’t make much of a difference. The first image is with GI caustics disabled, the second one is with it on.
this things happen in our works aswell, i think it is caused by the overbright blurry reflections. we havnt found a fix this , i hope vlado can come up with the solution.
Arrrh this is happening to me too.
I’m finding its light sources behind Glass materials, the only way I can get it to work is to exclude the glass lights from the vray light.
Not a good work around.
Here is what I get (straight open and render), with both old and new version of V-Ray. I am missing 4 textures though, and the RPC stuff - don’t know if that makes the difference.
The scene file I used may have had RPC’s in it at some point but no longer, problem is even when you deleate them all Max still looks for the plugin. Are you using Brute force or IR&LC because they only get bad with Brute force.
Yes. If I select the objects with VRayLightMtl materials and turn off the “Generate GI” option in the V-Ray object properties for those objects everything is fine. For some of them you could try turning on the “direct illumination” option in the material instead, if you really need them to emit light.
