Cinerender - Light Settings removing light artifacts

[Anonymous]

I am confused on how to remove artifacts from the Fluorescent Lamp 19.

I am trying to understand how this one light fixture works so I can get rid of artifacts. If I apply AIR surface to Light fixture and move it down into the space there are not artifacts?

[Anonymous]

After some fooling around I made it work by unchecking the shadow box from the Model representation.

[Anonymous]

This is the result I got

[Anonymous]

Here is the scene with the lights set up but I need to work on the shadows next.

[alemanda]

Interesting.
Cinerender produces strange artifacts.
I encountered several troubles with anexterior night scene with IES lamps.
I will give it a try with your method.
Thanks

[Anonymous]

For anyone trying the Fluorescent 19 light, there are some tricks.

1- Do not make it less then 5" otherwise the fluorescent tube dissapears.Then no light source will come from the light.

2- If you need it 5" less then use the glass and apply the Lamp material to emit the light or use a general light.

I will be testing IES lights very soon with the same scene just need to find a good IES file for a 2x4 LED fixture.

alemanda wrote:
Interesting.
Cinerender produces strange artifacts.
I encountered several troubles with anexterior night scene with IES lamps.
I will give it a try with your method.
Thanks

[Anonymous]

So here is the IES rendering test.
Definitely slower but shadows are way better.

[alemanda]

Did you turn off the shadows as well for IES lamps?

[Anonymous]

The shadows are actually turned back on because the fixture is not generating the light anymore. The IES light object is placed instead to create the light.

I recommend looking the the example files at the bottom of this link
as well as go through each video on the page. Quite worth it in the long run.
http://www.graphisoft.com/archicad/archicad-18/rendering/

alemanda wrote:
Did you turn off the shadows as well for IES lamps?

[alemanda]

vgodzb wrote:
..The IES light object is placed instead to create the light.

I don't understand.
What do you mean exactly?