Long time rendering easy scene

[Anonymous]

I am newie in archicad. Its my first scene rendering. IT is a very small scene of an stair case with 4 fluorescent lights. I choose the indoor final preset for a 2000 pixels quality and it goes through GI rather quick but it is going very slowing rendering, almost stuck on 1%. The issue has to do with the interiors lights, biz if I disable them it works.

Any suggestions of a set up to modify to have a 2000 pixels render of a small scene in about 45 minutes. It is only for a previous presentation.

[Anonymous]

Erwin wrote:
The General Light is the one that looks like a sphere in the little preview picture.

On the first tab of settings there should be a field where you can fill out a light strength parameter, but also an option to set it to infinite strength.

Turn off shadows and just use this to flood the scene with a bit more light, allowing you to tone down the lamps. Place the light behind your camera, so you do not see the (very slight) sphere in your render.

The light fixtures from ArchiCAD have very limited settings and lower quality light as well. I would turn off their light and place IES lights (would be great if you know the actual fixture you would be using and can download the IES file) or use the general spotlights and such. These have a lot higher quality lighting than the fixtures and more parameters to control what you see as visible light. Just use the fixtures for the 3D model. You can also make the glass of fixtures glow (remember to turn on glow effect in detailed settings). This is a post production effect, where the glass will appear to emit light. It does not actually light up the room, but means you can 'fake' the light shining look and just use some quick general lights to light out the room, instead of using many fixtures.

Also play with shutterspeed, ISO and F-stop to make things a bit brighter, allowing you to dial down the light strength. Settings that work for outdoor renders, will leave you with very dark interior renders, same as with photography.

Thank you, very understandable explanation also worthy for any render engine.
I appreciate

[Lingwisyer]

@Darwinland, just for everyone's reference, would you be able to add some details to your forum signature regarding your AC version as well as your computer specs?