topic Re: LW lighting Please help me in Visualization

LW lighting Please help me

Anonymous — Thu, 11 May 2023 11:20:32 GMT

The ceiling is too dark. I tried several things, but without sucess...
Please help me:

Rendering :LW.
Camera 0
Sun 0
Light 100%

I have used several lamps.
2x general lamps: intensity 40%, color : yellow, position:2m high
and many downlights.

Thanks.

Re: LW lighting Please help me

David Maudlin — Tue, 06 Dec 2005 13:36:35 GMT

samsung wrote:
The ceiling is too dark. I tried several things, but without sucess...
Please help me

Samsung:

You can take the WindowLight lamp (in the LightWorks Lights 9 folder) and set its rotation angle (under Parameters) to -90 degrees (so it points up) to help illuminate the ceiling.

HTH.

David

Re: LW lighting Please help me

Anonymous — Tue, 06 Dec 2005 14:38:18 GMT

Thanks for your answer.
I put the windowlight, and this is the result.
Is it enough?

Re: LW lighting Please help me

Anonymous — Tue, 06 Dec 2005 14:49:26 GMT

I put second Windowlight, with lightyellow-color.
The atmosphere is very.....hollowen.... not kindly...How do you think?

Re: LW lighting Please help me

Anonymous — Tue, 06 Dec 2005 15:35:22 GMT

I choose Pipeline for material, and switch off one window light.
This effekt is very strong... in some case stronger than light object.

Re: LW lighting Please help me

Anonymous — Tue, 06 Dec 2005 16:14:32 GMT

Activating pipeline in material properities is not a good approach to light up the scene. Window light should do the job here well, but you can also try to place 'general light' with max falloff in the middle of the scene and see if it works better for you. If you look for overall brightness than increase 'ambient' in photorendering settings, but careful, everything above 50% will flush out all the fine shadows in your scene. Hope this helps. Good work BTW.

Re: LW lighting Please help me

Anonymous — Tue, 06 Dec 2005 17:17:27 GMT

Hi Tiger
General light on, Pipeline off, Windowlight on, Ambientlight in Photorend. 50%

Re: LW lighting Please help me

David Maudlin — Wed, 07 Dec 2005 14:05:32 GMT

samsung wrote:
General light on, Pipeline off, Windowlight on, Ambientlight in Photorend. 50%

Samsung:

The light seems concentrated at the far end of the vault (comparing Rest..jpg to Rest.5.jpg). If your intention is to illuminate the vault more evenly, then here are a few things to try with the WindowLight lamp:

1. The lamp can be resized to fit or exceed the plan area of the vault (think of this light source as a panel of light, rather than a point source).
2. The number of light sources can be increased by increasing the Light Resolution and/or the Light Intensity, for a broader light source.
3. You might be able to turn off Cast Shadows with this lamp, which would decrease rendering time, as shadows from this source might not be needed.

HTH

David

Re: LW lighting Please help me

Anonymous — Wed, 07 Dec 2005 14:22:33 GMT

Thanks for your tipp.
Your tipp are very professional, so I hope, I can do according to your indification.
Than I will show this one. Maybe it can help other persons (and sorry for my long ...)

Re: LW lighting Please help me

Anonymous — Wed, 07 Dec 2005 17:53:38 GMT

I turn off Shadow for Lamps.
I used for the lighting vault windowlight.
and two generallight.
very very difficult

Re: LW lighting Please help me

David Maudlin — Thu, 08 Dec 2005 13:39:16 GMT

samsung wrote:
I turn off Shadow for Lamps.
I used for the lighting vault windowlight.
and two generallight.
very very difficult

Samsung:

Lighting the space becomes more complex as more light sources are added, as they can add to each other and it becomes harder to determine which source is the cause of over brightness. You might want to turn on only the WindowLight and then only each of the General Lights to have a clearer idea of each's contribution to the scene.

Your perspective has changed between Rest..jpg and Res.6.jpg (the camera is further back) so it is harder to evaluate the different lighting solutions on the vault. Rest.3.jpg looks the most even (with the WindowLight), I have found this lamp easier to control than the General Light (which is more like a ball of light). If you have a light that works for a portion of the vault, you might be able to then copy it along the length of the vault. The General light might need to be moved down further so a smaller portion of its "sphere" of light is on the vault, so the light intensity values of this portion have a smaller range (this guessing that the General Lights are creating the uneven light from front to back seen in Rest.6.jpg).

All of this is part of the learning curve with LightWorks, what you figure out from this exercise will help you with subsequent renderings.

HTH.

David

Re: LW lighting Please help me

Anonymous — Thu, 08 Dec 2005 15:36:06 GMT

Generallight is realy funny thing. I daubt, wheather it works...
It is good idea, to turn not every lamps.
Finaly I tried to make trick with Piranesi.

Re: LW lighting Please help me

David Maudlin — Fri, 09 Dec 2005 13:43:52 GMT

samsung wrote:
Generallight is realy funny thing. I daubt, wheather it works...
It is good idea, to turn not every lamps.
Finaly I tried to make trick with Piranesi.

Samsung:

For what it is worth, the illumination on the ceiling looks much better in your last image compared to the first.

David