When should I not use Radiosity render modes?
You should not use radiosity render modes when: • You can quickly produce satisfactory lighting by combining existing Vectorworks light objects, or easily “fake” the indirect lighting with fill lights. • You can use area lights or a dome of directional lights to provide satisfactory soft lighting effects. • There is not significant contrast between the brightest and darkest areas of the model, or there is not much colour contrast between the lit surfaces in the model. • Almost all of the light energy that falls on the model’s surfaces will be lost into space and not hit neighbouring surfaces when re-emitted.