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Hello everyone, I've been struggling with my IES lights and can't make them to be rendered with Vray. When the light cache is being built, the lights appear normally but when the first pass starts, it's like all my IES lights are switched off. I'm using and HDRI, no sun. Also going for light cache and Irradiance map. What could possibly be? It's annoying for me because I can't go further with my project and I can't find a solution for my case on the forums. Also, for the record, my lights were created with VrayIES, they're switched on and with an intensity of 18.000 lm. If I turn up the intensity, it doesn't work. Any help would be much appreciated! Thanks!

Hey guys Introducing myself, I'm Andy from Indonesia. I learn Autocad and 3dsmax about 3-4 years ago. My rendering now is quite good, thank to all tips and tutorial (sorry for my bad English) This is my first post here I have some problem in my rendering and need your help Look at the pictures above, I rendered both scene with same camera setting, same IES setting, but why the pictures with dark material looks different. The IES looks so weak even it have same Intensity. In real world, dark material wont affect the VrayIES intensity, right? Wall : Vraymtl, Bitmap on Diffuse Maps GI Environment : on, multiplier 1 VrayIES : Power 15.000, all setting is ticked. VrayCamera : Shutter 20, ISO 250, only Exposure ticked The difference between the pictures above is reflection. As you can see, VrayIES shape is not visible in top pictures, while the bottom picture the IES shape is visible. Top picture : VrayMtl, reflection color 255,255,255 Bottom picture : VrayMtl, reflection color 180,180,180 My question is, in real world, do the light visible on mirror ? Render Setup : Exponential, Primary : Irrandiance map Second : Light Cache Is there anything I need to tick or untick ? Correct my material setting if you think im doing it wrong. Im really sorry for my bad English, you may have some problem to understand what I mean. But thanks you if you want to help me! Check out my current best rendering : http://websta.me/n/andy_zhanq