Hans,
- I tried replacing the light bulbs in my example with a VERY long fluorescent strip, but the light is concentrated in the centre of the strip, regardless how long you make it.
that's the problem I was talking about.
But thank's for the explanation, I think I've got the main concept of a light source always being a sphere.
Now I've managed to get the almost desired effect of the LED-strip: I've placed several small light-sources every 30 centimeters (10 lights for the 3m wall), and the result is quite soft lighting (see the picture). The rendering speed has gone several times slower, as You have said also, but it is worth waiting =)
But now there is another problem =)
The "LED-light" is quite bright but the reflection of my "LED-strip" in the ceiling (reflective top-box in my case) isn't as strong as expected. In the real life the ceiling-reflection of that LED-strip would give some soft light to the walls and to the floor, not much but still enough to see the interior of the room.
With SH I get almost a full darkness in the room.
Could anithing be done to get more realistic results without adding some light in the middle of the room?
P.S.
on the "picture-1" I've used "LED-strip" only and got a dark room.
on picture-2 there is a light added in the centre of the room and the result is almost a real lighting, IMHO, exept these lighting-artifacts on the ceiling and the bed coming from the central source (a really strange circle of pointed light on the bed...).
I've also added the test-project, so you could take a look at the settings of the room (maybe I've made some mistake with the settings somewhere...)
the LED-lighting project
