Dark ceilings...how to brighten them?

[BarryV]

Hi everybody!

I have a question.

How do you brighten up ceilings in rooms where the windows are relatively far away?

Do you place (double sided?) area lights on the ceiling? Do you increase diffuse/luminosity multiplier on floor/ceiling?

Thanks in advance!

Barry

[Janusz Biela]

Hi everybody!

I have a question.

How do you brighten up ceilings in rooms where the windows are relatively far away?

Do you place (double sided?) area lights on the ceiling? Do you increase diffuse/luminosity multiplier on floor/ceiling?

Thanks in advance!

Barry

Good idea is put lamps ON. If they are not in this place You can put area light behind camera.
I use always small area lights (one side shot direction to floor, around 0.5 m size, every 1 m, small intensity )...just "ambient light trick". I saw in V-ray renders my fiend used sometimes 10-20 small area lights on the ceiling in whole apartment...

[BarryV]

Thanks Janusz,

Area light behind camera I was thinking about to experiment with, but I have to make animation. This will become visible when camera moves, right?

And are those area lights on the ceiling double sided? i.e. will they give light spots? Now I use single sided lights...

[Janusz Biela]

Thanks Janusz,

Area light behind camera I was thinking about to experiment with, but I have to make animation. This will become visible when camera moves, right?

And are those area lights on the ceiling double sided? i.e. will they give light spots? Now I use single sided lights...

One side as area lights (spot OFF)

[thomas]

I have a very cheap and dirty trick, from the days of faking everything with spotlights but I must warn you: it's a filthy hack!

I just give a surface less diffuse and more luminosity. After that you need to tweak the multiplier value in that surface plugin - or not, if the result is good. Alternatively, if the corners brighten up too much, you could just tweak the diffuse above 100%.

Like I said, it's a dirty and simple trick, but it's fast and for some situations it works really well.

[nico]

@ Janusz
the area light parallel to floor with direction to ceiling above the object (sofa table or other)?? witout shadow?

but where is the example scene of 576 days ago..??

[Janusz Biela]

@ Janusz
the area light parallel to floor with direction to ceiling above the object (sofa table or other)?? witout shadow?

but where is the example scene of 576 days ago..??

You have to put Area lights in places where is too dark (last time I find something interesting: I put for area Power 4-5, rest lights normal)

[nico]

thank's for all

[Janusz Biela]

I test now the same but with Lumi Poly. It is much faster. I can`t cancel IES (I need it for effect) but I noticed : over kind of amount Area Kray starts render slow (it is normal: too many sources of light). With Lumi this problem does not exist
I just create one lumi panel with Power 3 and I clone it under LW (+ command lwo2unseenbyrays_affectsgi 0; to hide it)