CAN'T SEE THE LIGHT...

[John Ferris]

Could use some direction here - not making any progress. Refer to the attached image and ACAD file. I am trying to add a light behind the circular window to have the window lit up in the rendering. The rendering is an exterior shot, facing the sun with the building in silhouette. I've added the light and turned it on but do not see the effect. Not sure how to proceed. Thanks - John

[Alfons Akamp]

Hallo John

Gegen die Sonne eine Lichtquelle setzen, kann nicht gut gehen, weil die Sonne ja viel heller ist als deine Leuchte und deshalb siehst du den gewünschten Effekt nicht.
Stell die Uhrzeit mal später ein, damit man noch so eben Sonnenlicht sieht, aber auch schon das Licht der Leuchte. Dann erreichst du deinen gewünschten Effekt.

Grüsse

Akamp

[John Ferris]

Thanks...I'll try and let you know.

[akinlolu olugboji]

Try glow.

[akinlolu olugboji]

After 3 passes.

[akinlolu olugboji]

sun on channel 0, sky on 1 and light on 2 could help too.

[John Ferris]

More good info - thanks for your help!

[John Ferris]

Thanks...might be an easier solution than the light. I'll try and let you know.

[Roy Hirshkowitz]

Is this more what you had in mind?

This is a huge space which you're trying to light with a single 100watt bulb, no realistic interior surfaces, nearly opaque glass, and have it compete with an extremely bright sky.

To get this image, I used the Path Tracer (it's faster for this sort of thing), boosted the light source to 10000 watts, made the glass almost fully transparent, and still had to create a multi-channel rendering and turn the sky down by a factor of 0.0001X. This last step may not be as necessary if the interior lighting and surfaces were more accurate.

[John Ferris]

Thanks Roy...It's getting there. I greatly appreciate your time and guidance. I'm venturing into unknown territory here and It's amazing to get such prompt, knowledgeable responses on the forum like this. Bless you all...John