I haven't used AC23 yet seriously and I know there are a few (minor) tweaks to Cinerender there, but the following has worked for me pretty much since AC18 when Cinerender was introduced.
Quick explanation of why I use these settings: we need quick renders for our clients and can expect to make them many times of the course of a project. As such I want them to not take more than 5 minutes for exterior renders.
As a starting point I use 'Outdoor Daylight Fast (Physical)' preset.
Before going into the Detailed Settings, I change the weather preset to 'Friendly Afternoon' and I tick 'Use ARCHICAD Sun Position'. This gives me some nice clouds and makes sure the sun is shining from the direction I want.
Now I got in to Detailed Settings (tickbox at the top).
If I'm using any indoor lighting I tick the 'Lamps' in 'Light Adjustments' and ussually set them at about 50 strenght for daytime renders.
In 'Environment' I go to 'Physical Sky' and under 'Clouds' in untick 'Cast Shadows'. This just adds render time and doesn't look that great.
If I feel that the render looks too flat I go to 'Effects' and tick 'Ambient Occlusion'. The default settings work ok for me. This does add some render time.
Under 'Global Illumination' I set the 'Secondary Method' to 'Radiosity Maps'. This gives an extra pass of GI and makes things look a bit better, without adding too much time to the render.
Then finally I go to 'Options' > 'General Options' and set 'Ray Threshold' to 0. This makes sure I get all the reflections I want. It does add a bit of render time. So feel free to play with the setting. IIt's a cut off value for reflection strength. It is set at 15 from the preset, which means below 15% light strength things are no longer reflected. As said, I feel it gives a bit of a flat look to my renders unless I set it to 0.
'Ray Depth' and 'Reflection Depth' I generally set both to 12. This means you can have 6 layers of glass panes (or other transparant things) before it stops rendering and is generally enough to see through the building if needed.
Finally always consider your render size. Most people will look at your render on some mobile device or HD screen, as such I find it a waste of time to render out at full sheet size. We do our renders at 195x135 mm at 300 dpi. This still prints out crisp when scaled up to A4 on our laser printer and looks great on mobile devices and HD screens.
Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nlArchiCAD 9-26NED FULL
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