Help with lighting

JDA · Post by **JDA** » Fri Jul 25, 2008 2:58 pm

In Indigo how do you turn up indirect lighting
and turn down direct lighting?

Scene has 1 mesh emitter.

Any help is greatly appreciated.

pixie · Post by **pixie** » Sat Jul 26, 2008 12:44 am

The same way you would in reality (ie- you don't;))

Pibuz · Post by **Pibuz** » Sat Jul 26, 2008 12:54 am

Hi JDA! perhaps you could try lowering the mesh emitting power (given that you're using camera tonemapping): that way your light will be less strong, so the surrounding lighting should be more visible!

StompinTom · Post by **StompinTom** » Sat Jul 26, 2008 1:33 am

Pibuz wrote:Hi JDA! perhaps you could try lowering the mesh emitting power (given that you're using camera tonemapping): that way your light will be less strong, so the surrounding lighting should be more visible!

not if the light is the only emitter in the scene. the relationship between emitted and reflected light stays the same. it would just be like stopping down on a camera: you just get a darker scene.

what you could do is use Reinhard tonemapping and tweak it so you dont compress the dynamic range as much.

Pibuz · Post by **Pibuz** » Sat Jul 26, 2008 2:08 am

Oh God, you're right Tom..
I actually automatically assumed that there was an emitter mesh AND the sun/sky system (which is obviously not, as JDA said there is only an emitter..)

Sorry JDA

: Tom is so right!

JDA · Post by **JDA** » Sat Jul 26, 2008 8:25 am

Thanks.

Hey Tom, how did you do the lighting in mobius?

zsouthboy · Post by **zsouthboy** » Sat Jul 26, 2008 8:40 am

JDA:

Looks like sunsky on a plane to me..

JDA · Post by **JDA** » Sat Jul 26, 2008 9:29 am

Thanks.

I just tried that out and its not working for me.
Do you know how to set that up? I use Blender BTW.

zsouthboy · Post by **zsouthboy** » Sat Jul 26, 2008 9:34 am

Err - that looks exactly like I would expect.

What's wrong with it JDA?

JDA · Post by **JDA** » Sat Jul 26, 2008 9:38 am

Im looking for this.
http://www.indigorenderer.com/joomla/in ... itemId=761

dougal2 · Post by **dougal2** » Sat Jul 26, 2008 12:10 pm

use a lower sun angle, pointing towards the camera. your render looks like midday sun - try a more evening sun angle.

StompinTom · Post by **StompinTom** » Sat Jul 26, 2008 12:14 pm

that appears identical to what you have. at least as far as lighting conditions go.

right now your object is occluding most of the light from the sky that would otherwise brighten up your shadows.

what you might want to try is setting the the sun angle roughly perpendicular to the viewing angle (coming in from the left or right) and change your camera angle to point more at the horizon.

play with the turbulence parameter as that affects how diffuse the sunlight is and, i think, a little bit how bright it is.... ie. higher turbulence is more of a diffuse sunlight if i remember correctly. put it lower to the horizon as well, that will make your shadows longer/expose them more to the skylight which means they will receive more light = brighter shadows.

otherwise, play with Reinhard tonemapping. you can control the contrast better that way. good luck!

dougal2 · Post by **dougal2** » Sat Jul 26, 2008 12:26 pm

StompinTom wrote:play with the turbulence parameter

you mean turbidity

JDA · Post by **JDA** » Sat Jul 26, 2008 12:51 pm

Hey thanks guys.

Tom, what about mobius?
How did you do the lighting?

StompinTom · Post by **StompinTom** » Sat Jul 26, 2008 3:47 pm

dougal2 wrote:
StompinTom wrote:play with the turbulence parameter
you mean turbidity

my bad! i meant turbidity. one too many beers after work...

which mobius? i think ive got a couple versions....
one was done with sun/sky, just your basic 45-45 set up (sun is at an angle 45 from the horizon and 45 from the viewing angle).

another was done with a studio setup with two softboxes (big light-emitting planes) to the left and right of the camera.

post the link though....

Help with lighting

Help with lighting

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