Working toward photoreal Mental ray

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  10 October 2013
Working toward photoreal Mental ray

I am working on a simple scene in 3d max 2013, I am trying to get a better understanding of mental ray
here is a sample of the scene and setting. I would like to know if I am on the right track.

http://i488.photobucket.com/albums/...omaxis/Desk.jpg
http://i488.photobucket.com/albums/...is/settings.jpg
 
  10 October 2013
It's a good start.
First thing that stands out is the ambient occlusion. It's breaking any illusion of reality as it is a faker of soft shadows and does not fit in with your lighting. Also you've multiplied it over everything including the sun light, which is wrong. It should never affect direct light sources only indirect. But I say just get rid of the ambient occlusion and let final gather/gi do that job. It's much better at it and can do nice colour bleeding and light bounce effects.
Can't critique much more at this point until you start shading and texturing.
But as a general critique I would say the image is a bit on the dark side. I would brighten it up overall but that's just personal taste.
 
  10 October 2013
Strange? I'm starting to add shaders and textures to my scene, however! once the scene is rendered and i select save image, the image turns dark! not to sure what causes this?

http://i488.photobucket.com/albums/...esk_Shaders.jpg
http://i488.photobucket.com/albums/...screenCap-1.png

Last edited by AndreSpence : 10 October 2013 at 06:08 AM.
 
  10 October 2013
Looking better!

Are you using any final gather or gi in this or is it all faked with bounce lights?
Just curious because things like the inside of the drawer should be a lot darker. There doesn't appear to be any shading in there, mostly flat colours. If you are using fg/gi maybe try raising the accuracy and lowering any sort of interpolation. This will take longer to render but it will also look much nicer and more realistic and shade things in small cavities like the drawer much nicer.
 
  10 October 2013
Yeah I agree with pap, if you can get rid of some of the flatness that's going on you can really start to sell the believability. I'm not sure what the colors are of your lights, but maybe you should try experimenting with different colored lights to enhance the mood in your scene. Nothing too crazy just something to push the image a little bit. Great start though, looking forward to what you come up with.
 
  12 December 2013
sorry for late update:
http://i488.photobucket.com/albums/...maxis/desk1.jpg

Last edited by AndreSpence : 12 December 2013 at 02:47 AM.
 
  12 December 2013
Good progress so far, one thing you may want to look into is adding some sort of texture to every object in your scene. It could be a subtle bump map, to a simple spec map; just something to add little details to all your objects. You may want to add a little bounce light coming from the floor, and from the opposite side of the window. Nothing too crazy, just something that would emulate light bouncing off the floor boards and the wall behind the camera. I like where this is going, keep up the good work.
 
  12 December 2013
Thanks for the feedback, in regards to the textures I do have them on all objects, tile wood for the desk, an old wood texture for the desk drawers and window frame! I have a reflection map on everything. Even bump map. Also when your referring to bounce light would I add point light.

Last edited by AndreSpence : 12 December 2013 at 02:41 PM.
 
  01 January 2014
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