Forums >> Revit Building >> Technical Support >> Lighting Color

sarah12

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Joined: Sat, Apr 16, 2011
10 Posts

Hello, I have a question about lighting in interior renderings. I have created a custom light that is essentially just a small glass box that is wall hosted that I put a rectangular light in. I am also using the hemispherical light distribution setting. I have tried changing the color to the flourescent daylight, flourescent cool white, and tried a custom setting. I also have tried a white filter and a light blue filter. No matter what I do, these lights on the wall are yellow. Everything just seems to help the light thrown off from the thing, not the actual box. I would love for it to appear very cool white. Any ideas? I will attach a quick rendering of what I mean. 

Thanks! I am really at a loss here, and I don't feel like I really have a handle on lighting. 

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sarah12

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Joined: Sat, Apr 16, 2011
10 Posts

I think my question just changed slightly. I rendered with a downlight and it was white like I want it. So, I started checking settings to see what was different, and I noticed that there are setting in it relating to a light box. This makes me think that I just don't know how to make a custom light from scratch in the first place, because I certainly didn't make a light box, nor do I see how to. I just made a glass extrusion in the new wall based light family. I feel like I need to understand the light box setting because really what I am going for is a long rectangular box-shaped light, not a light coming from a point as is in the rendering above. 

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sarah12

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Joined: Sat, Apr 16, 2011
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Okay, I just got what I wanted by editing a downlight. However, I still wonder what setting was weird before. I feel like I just faked it instead of understanding what I was doing wrong. 

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sarah12

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Joined: Sat, Apr 16, 2011
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Nope, still no luck. I ended up putting in a bit of ceiling and trying box lights, unchanged, and it looks awful. What am I missing here? I am going for a solid strip of light. This looks so bad. I am getting pretty frustrated, particularly when I have classmates trumpeting that lighting is so easy, haha. 

Any suggestions?

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WWHub

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Joined: Tue, May 16, 2006
13079 Posts

Does this light have an enclosure - like glass?  Have you looked at that material's properties?  Remember, "THE PROJECT RULES"  Once a material is loaded into a project, changing it in the family has no consequences (except for future uses).  You have to change the material in the project.

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sarah12

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Joined: Sat, Apr 16, 2011
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You are a genius! I can't believe I did that. What a waste of a few hours. That is exactly what was wrong.

Any thoughts on why the other lights are so grainy and strange looking? I tried higher quality renderings, that is not the problem. 

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sarah12

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Joined: Sat, Apr 16, 2011
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I am still baffled by lighting. I tried again, this time with a new ceiling based light in a glass box. It is illuminating the space - I did a rendering with artificial only. However, you can't see the light. You can see the glass boxes though. And then, the other lights in the second rendering above have that ugly grainy issue. I don't care how I go about doing it (using a custom light or a light already built into Revit) I just need it done. Any ideas? 

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Attached Files 90932_LightTest2.rfa

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nastyclown

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Joined: Mon, Jul 13, 2009
273 Posts

First of all, now you know that you cant override from the family the materials in the proyect loaded, you know is a bad idea load things directly to the proyect you working on (you make a test proyect, meaning a box, 4 walls a floor and a ceiling/roof)

You dont add the material parameter to the extrusion you set for the light; i add the parameter, and then inside the proyect test add and replace default material for glass-Luminous - Translucent White.

The ugly grainy  you are talkin about shoul be gone with bigger render sizes.

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