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View Full Version : Rendering: Lighting: I need help tweaking this scene


inode
03-30-2004, 09:32 PM
Hello everyone.

First time posting, long time reader :)

I have been working on this scene mainly as a lighting test for mental ray. The set is my workstation I use at home. Wish I had a good pic of the way i want it to look but I dont have a digital camera. But basically it needs a bit more lighting than the render I have shown here, yet the mood is somewhat close to what I was looking for. If anyone can help me with the GI and photon settings, that would rock. I just seem to be going in circles with all the settings I have been using and adjusting. I thought maybe I should use FG on it as well, which smooths it out nicely, but it then becomes over bright.

Another thing, how do I stop the photons from the point light(inside the lamp shade) from bleeding through the shelf on the desk?

Heres the images:

http://www.fiadesigns.com/dd/light_test.jpg

http://www.fiadesigns.com/dd/light_test4.jpg

Thanks in advance

inode
03-30-2004, 10:46 PM
Here are the settings I have currently:

http://www.fiadesigns.com/dd/spotlight_attrib.jpghttp://www.fiadesigns.com/dd/point_attrib.jpg

http://www.fiadesigns.com/dd/global_prop.jpg

misterdi
03-31-2004, 01:09 AM
If the scene become to bright after FG, I think you can lower the Irradiance Color in mental ray tab of materials to 0.314 instead of 1.0

Lowering the irradiance color will lower response of the material to FG photons.

chainsaw
04-02-2004, 07:13 PM
hi, when you choose to use GI and FG together you could try first tune the GI settings without using FG, take into account that FG will add another layer of light to your scene so keep it a bit darker than you want.

one way to get it darker without too much tweaking on the settings is increasing the exponent in your spotligh attribute editor, mental ray tab, caustics and GI subtab.

when you use FG you are not limited to having lights light your scene, every object in the scene becomes a object light, so you can use the incandescent attribute to get some nice effects, like light from a screen or simulate an area light just like your lamp.


http://www.auctionphotobank.com/upload/108093617553.jpg

<img src="http://www.auctionphotobank.com/upload/108093617553.jpg">

inode
04-03-2004, 12:02 AM
Thank you guys for the input. I am new to the advanced features of rendering in mental ray. Thank you for not finding my questions too newbish :)

I am going to play with the incandescent attribute to see if I can finish this scene and move onto some other idea's I have. But learning the tools, as vast as they are, is what's been holding me back as a artist. This forum has helped tons already though.

BTW, when do I get to post and not have it reviewed :) ?

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