exterior help lighting

nico · Post by **nico** » Fri Jul 18, 2008 9:02 pm

hi

i've a problem for lighting this scene. there's a problem with same texture but j think that the lighting isn't good.

1 spot light 150% - 1km - inverce distance2^
spot to light activeted
low setup for kray
skylight.p
tone map gamma 1.2
RRL 8

as i can make it realistic as light?
thank's for answers

WITH SUNSKY + SUN my problem are >

nico · Post by **nico** » Sat Jul 19, 2008 10:23 am

no answers!!!

Post by **jure** » Sat Jul 19, 2008 11:27 am

The light is not that big of a problem as your texturing is.

I suggest you start with completely white/gray model for start to get lighting right.

Then you can start texturing your model...

good luck!

nico · Post by **nico** » Sat Jul 19, 2008 11:51 am

thank's jure.
this is the last version, the client has changed some think.
new render as a new sistem of lighting and texturing

Janusz Biela · Post by **Janusz Biela** » Sat Jul 19, 2008 12:05 pm

nico wrote: thank's jure.
this is the last version, the client has changed some think.
new render as a new sistem of lighting and texturing

You have too many bounce light....
try type in tailer cmds: recurse 7;
this reduce bounce light to 7.
Exponential 2.2 and orange/yellow sun.

geo_n · Post by **geo_n** » Sat Jul 19, 2008 5:49 pm

I think its the material that need more tweaking. Try not to use too much diffuse value, 0 spec, 0 gloss, maybe 5-15 refl with gradient and 40% blur.

darickster · Post by **darickster** » Sat Jul 19, 2008 6:09 pm

HSV is a choice, its just not realistic. Better to have it oversaturated to start with and go without, your bounces will wash out colour and you'll end up with something realistic.. for added realism (if you have lw 9+) use a real lens camera with a minor irradiance fallof of perhaps 2.

The angle is one that wouldnt appeal to clients as your building seems to tumble..

nico · Post by **nico** » Sun Jul 20, 2008 12:30 pm

@ Johny thank's for your support
@darickster, now a new render with real camera setup an without HSV

@geo_n with diffuse at 0 the object is very very black...i need to down same valuers

there is a message of warning for octree depht ETC ETC
how can delete this message?

thank's for feedback

juice · Post by **juice** » Sun Jul 20, 2008 12:40 pm

nico wrote:there is a message of warning for octree depht ETC ETC
how can delete this message?

I am also very new with Kray, it was also one of my first questions, and I found it under "Quality"-Tab at the bottom, you can activate it with the "Quality preset" set to "custom" and than enter a higher number...

geo_n · Post by **geo_n** » Sun Jul 20, 2008 3:05 pm

nico wrote:@ Johny thank's for your support
@darickster, now a new render with real camera setup an without HSV

@geo_n with diffuse at 0 the object is very very black...i need to down same valuers

there is a message of warning for octree depht ETC ETC
how can delete this message?

thank's for feedback

diffuse not 0, around 60-90 value is good for typical material.
only spec and gloss 0 then put gradient in ref for ref material. put some blur around 40-80% for blurred reflection.

darickster · Post by **darickster** » Sun Jul 20, 2008 3:07 pm

depending on what system configuration you have you can set octree to higher level, it will speed up renders as it will use RAM more.

At home i have a 1 Gb configuration and raise it to 30, at work ik have a 4GB configuration and set it to 120.

You have to find a balance, if i set it to high, lw crashes on me.

cheers

ric

darickster · Post by **darickster** » Sun Jul 20, 2008 3:16 pm

@ nico: your render is crappy on AA, or completely off?

turn to grid4, filter radius 0.7, set it to custom and enter upsample to 1 to get the small detail in. Unless you are using none for preview purposes.. if thats the case i'll shut up

nico · Post by **nico** » Sun Jul 20, 2008 7:39 pm

@juice thank's
@geo_n i use a quad core with 4gb ram so i can set 120

tomorrow in the morning set it

@darickster. yes there isn't AA because are a preview. thank you for the valuere, i see it.

it's a first exterior in kray so i want know the sw.

i know my problem with texturing but this a exercise for me.
now the last render have same problem of black shadows in front of building. i think is a problem of bounces or not?but i can sorrect it in post.

darickster · Post by **darickster** » Sun Jul 20, 2008 9:44 pm

nico wrote: now the last render have same problem of black shadows in front of building. i think is a problem of bounces or not?but i can sorrect it in post.

Its not a problem of bounces, 7 is enough for exterior, if you up bounces too much you lose detail.
Instead enter a multiplier in second tab (photon settings) to get more light in, for exterior it should be about 2-3 but you have to test, and when you are not rendering in floating point be sure to set gamma to 1.7 (and exposure to 1.1/1.2 to make up for the loss of light when using irradiance falloff)

cheers, see you at octree 120

nico · Post by **nico** » Mon Jul 21, 2008 8:56 am

darickster...you open my mind!!!

Menu

My account

Kray Tracing Account

exterior help lighting

exterior help lighting