topic Re: Render problem showing bubbles in Visualization

Render problem showing bubbles

vivifliouka — Sat, 06 May 2023 21:09:16 GMT

Helllo everyone!

Does anyone know what are these bubbles/circles in my rendering?

Re: Render problem showing bubbles

Lingwisyer — Mon, 08 May 2023 01:14:01 GMT

Generally a caustic issue. Try rendering with more bounces.

Ling.

Re: Render problem showing bubbles

Barry Kelly — Mon, 08 May 2023 03:42:55 GMT

You must have had 'Disco Mode' set when you rendered. 🤣

No, seriously it seems to be to do with Global Illumination I think.

With a search for '+spots +render' I kept coming across this post.

https://community.graphisoft.com/t5/Document-Visualize-forum/Light-Spots-in-renders/m-p/277290/highlight/true#M43423

Barry.

Re: Render problem showing bubbles

vivifliouka — Wed, 10 May 2023 06:14:41 GMT

I am still laughing!!! Thanks for that! 🙂

Re: Render problem showing bubbles

vivifliouka — Wed, 10 May 2023 06:18:10 GMT

Hello, thank you for your answer but since I am Greek the technical terms might be difficult to understand. So what is bounces and caustic issue? I now rendered the same project 2 rooms, one with lights from lib 17 and one room with rooms with lights from lib 20 and realized that the problem is with the lights from lib 20 which makes me realize that the problem is not a general setting of the rendering but sth from the actual lights settings. Any ideas? I attach the pic, op the left side is the room with the light from 20 and the right is lights from the lib 17

Re: Render problem showing bubbles

Lingwisyer — Wed, 10 May 2023 09:23:13 GMT

https://community.graphisoft.com/t5/Visualization/ArchiCAD-18-Interior-Animation/m-p/222054/highlight/true#M4299

Re: Render problem showing bubbles

Erwin Edel — Thu, 01 Jun 2023 07:48:10 GMT

Turn off the 3D fixture lights (so you just see the 3D model bits) and use the 'generic' light sources from the ArchiCAD version you are rendering with, so you have the same settings for all sources.

You can also brighten the interior by just using a few generic lightsources, if render times are getting crazy high. I find that f/4.0, iso 400 and 1/125 shutterspeed are plenty bright for interior renders.

These 'generic' sources are basically 'invisible' and just cast a lot of light, shadow, etc and a very adjustable in what you want them to do. For a really quick fix, drop one behind your camera (sort of acts like camera flash).

You can use 'light emitting' surfaces for the lightbulbs etc. These basically add a bit of glow, but don't really cast light. It just helps with the illussion of them casting light.