Revit - 3ds Max - Evening Render Interior Light Glow

[edwarddieppe]

Hi everyone,

 

I am trying to set up a scene in 3ds Max 2014 using a Revit FBX import. The scene includes a residential tower block with ground floor shops. I hope to achieve a high quality evening shot with the sun setting behind the building and the shops and random apartments with lights on throughout the tower. I am using mental ray rendering with mrsun and mrsky.

 

I am having difficulty getting the interior lights to show at all. In the past I have got around this in Revit native rendering by boosting the light output from the interior lights to something like 20x the actual output of light. 2 images below show the different results for the same image rendered in 3ds Max and the other rendered from Revit using the cloud rendering service. The cloud render has no manipulation of the lights and they show as i would hope. The 3ds Max render has the sun multiplier reduced to 0.3 and the lights at 200% however they appear not to give any light. Note that both renders are set to 6.30pm. Lastly i added 2 extra omni lights under the awning to the 3ds Max scene to test whether it was something to do with the Revit import, these do not show either.

 

Thanks for looking, i hope someone can be of assistance. Cheers, Ed

 

[Francisco Penaloza]

If you are going for a sun set shot I would not use MR sun at all, maybe just to set the sun position, and then just turn it off, and play with the Mray Sky, or use a skylight with a image on it, preferably a HDRI.

If you are using max 2014 the IBL it been very well updated so using a skylight with a HDRI is the way to go.

Setup your skylight first, then adjust the exposure of your camera, then increase the interior light accordingly, it should work fine.

If you still can't see the interior light, lower the intensity of your sky light and start again adjusting the exposure and then the interior light.

[edwarddieppe]

Thanks. I'll give that a go today an see how I go! Cheers, ed

[edwarddieppe]

Hey, just a quick follow up to say thanks for the advice. Worked a treat! Final image attached. Cheers, ed