【 Weak current college 】 sets the scene lighting considerations

The lighting in the scene and the true light, it needs to render time spend, the more complex lighting settings, rendering the time spent, the more light management also becomes more difficult. You should ask themselves each light on making appearance is necessary.
When you increase the light source, will reduce the reflection points. At some point, increasing the light does the appearance of the scene, and will become very difficult to distinguish between the increase in the value of the light source. You can try an independent look at each of the light source, to measure the relative value of the scene. If you doubt it, delete it.
--Some objects need to be excluded from the light source?
Excluded from some of the light source, in rendering an object, they can save time. The principle for production of shadow is correct. Scene of each light source is used to make the shadow, the situation is quite uncommon. Making shadows may be very expensive (especially ray traced shadows), and sometimes on the final image is harmful.
--Use tile effect instead of the actual light source to emulate any lighting?
Building lighting, illuminating the monitor and other independent small combination of light sources, sometimes you can use texture created instead of using the actual light source.
-Can I use some techniques to make the scene more realistic?
For example, as photosource add color or texture, you can simply make the scene to reach a better atmosphere.