How to get the realistic light show!?

[Anonymous]

Hello everybody!
I'm a newcomer from Vietnam, and I've learn to use AC11 2 weeks ago.
There some first result!

-- I wonder how to light the bottom face of an object ??? It's always seem to be dark and not realistic.
-- Dear Dwight! I realy like your book. Can u tell me how to buy it?? I've got cash only!

( Execuse me for bad English! )

[Anonymous]

And here - Using an extra Sun object without cash shadow - there's no soft shadow in the conner of wall & ceiling..... Any way - it run so fast

[Dwight]

When lights don't cast shadows, the rendering is extremely fast because fewer calculations are needed. The ideal is to have only one light that casts shadows....

[Anonymous]

@ Dwight!

What elevation for that only one light ???

[Dwight]

Somewhere theres music
How faint the tune
Somewhere theres heaven
How high the sun?

[Anonymous]

Nice renders! as for your first question about lighting the underside of the objects, have you played around with the pipeline/ Graphisoft Emission shader? It works a bit like Max's self illumination settings, it just lights the material without actually producing any light.

[Dwight]

Excellent suggestion, but that approach tends to make materials uniform in light reaction.

They lack modeling.

You'll also need a different material for shade versus well-lit and this can mess up the quantity calculation chart.

I find the "Undersun/Hellezon" approach copes with any dark shade condition without adding rendering time.

[Anonymous]

Sukhoi wrote:
Thanks "Whatever" for your guider.
I find out 2 way to light the bottom face of an object
1) Use an extra sun - without cash shadow
2) Use Realistic method of the " Sky object"
- Sample 200 ( duo2.8, 1gb ram) , may be more on stronger system.

The second way make picture look more realistic than the first - especialy in the conner of wall&ceiling.

Hope to sharing the skill with every body.

Here are some test - same V-ray presentation
(Execuse me for bad English)

Sukhoi, looking at your exterior view I suggest more archictecural detail for the facades would add to the realism. Also the roofs look too thin. Interiors are great though.