What's new
By:
Photoshop Gurus Forum

Welcome to Photoshop Gurus forum. Register a free account today to become a member! It's completely free. Once signed in, you'll enjoy an ad-free experience and be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

3D Need help with realistik Lighting effect...

  • Thread starter Thread starter (PSD) Sergiy
  • Start date Start date

P

(PSD) Sergiy

Guest
Hello Fellas,
I am working on one image wich needs a Realistik Day Light. I would like to have a Daylight shining from the Window on my work space. But i canno`t figure out how to make that kind of effect. I have working with Lights for many times and i didn`t have any of the problems. But how to make that one?
Maybe you know some good Tutorials with Lighting, i would apreciate it

Thank you 8))
 
Good picture there, Sergiy.
Can?t wait to see it finished...
try giving your light a bit of yellow so it looks more like a daylight...
you could also you some "projector effect" to simulate the shadows of a tree outside the office. ;)
also depending on your app, try creating or simulating the radiosity effect...

Good luck!
 
Serge

Thank`s Tak for Reply,
I was trying to create something similiar, but i canno`t achieve this kind of effect anyhow. Below, there is one more example. i`m just rendering it. I Didn`t finish yet, i still have to render Bundle, probably Walls, few things to correct and figure out why does the light coming throught under the wall. I pulled it down in "-" Y direction and the still goes in. I was trying to interfeer it with other abjects, by putting them behind the wall. But its still getting through.
When i will finish i will post it here and if you got any recomendation, please share ;)
 
Attenuation -
You need a light with proper attenuation.
Put an omni light right over that part of the desk and attenuate it to fade before it gets to the far wall.

Personally, I would render a few different lighting passes and then comp them together in PS.
 
Serge

Thanks for Reply,
You need a light with proper attenuation
Click to expand...
I just found out about that one, anyway thanks a lot.

Personally, I would render a few different lighting passes and then comp them together in PS.
Click to expand...
thanks for the recomendation, i will definetely use it :righton:

My best,
Serge
 
Sergiy

After long, long hours playing with light and texturing, here is something i come up. Plus those pictures on the wall are olmost exactly the ones i got in my room. I brought them from Ukraine, my grand dad saved them from the time of the war. I hope you like it :)

EMPTY DINNER
 
Sergiy, here is a simple post-compsiting trick.

The first thing you need is an ambient pass render. Everything is self-illuminated 100% and no shadows. However, there should be colour on the objects.

Then, change all of the materials on all of the objects to pure white.
Add a light to the scene and render.
For each light in the scene, do a seperate render. Don't forget to turn shadows on and maybe mess a little bit with attenuation (attenuation doesn't have to be perfect).
Maybe even do an occlusion/GI render.

Open them up in PS.
Put the ambient pass on the bottom.
Put all lighting passes over the ambient pass (cut-n-paste, drag-n-drop, or whatever).
Set all of the lighting passes to Multiply.
Then it's just a matter of playing with the lighting passes. You know, change opacity or clip some adjustment layers. Maybe even try a few other blending modes.
In this way, you can change the lighting with real-time feedback and tweak to your hearts content with out having to re-render everything.
You can even colourize the lights.

That is a very basic example of post-comp.
 
Serge

Thanks for the help Stroker. 8))
Sorry, i`m realy confused by your Reply, i know its very helpfull, but it seem like i just canno`t figure it out. I dont know what you mean by "Atenuation" and "everething is self-eluminating 100% pure white" and "than change all of the materials to the pure white"
If you interested, here is file: http://home.comcast.net/~psdsergiy/Comp.zip

Thanks Stroker :)
 
(PSD) Sergiy said:
Hello Fellas,
I am working on one image wich needs a Realistik Day Light. I would like to have a Daylight shining from the Window on my work space. But i canno`t figure out how to make that kind of effect. I have working with Lights for many times and i didn`t have any of the problems. But how to make that one?
Maybe you know some good Tutorials with Lighting, i would apreciate it

Thank you 8))
Click to expand...

You did that 3d!!??? :shocked: :righton: :righton: :righton:

Teach me ;) :D
 
See attachment

Upper-Left
This is a lighting pass. Just regular global illumination (GI). Notice that all of the materials are pure white.

Upper-Right
Another lighting pass. The materials are still white. Just one light in the scene and it casts shadows.

Lower-Left
This is the ambient render. No real lighting, no shadow - nothing but pure colour.

Lower-Right
Took all 3 renders into PS and played around like I already mentioned. Set the lighting passes to Multiply, then messed around until happy.

If I need another lighting pass, no big deal since the scene is pure white and it will take no time at all to render.
The advantages of multiple renders and post compositing are amazing.
I highly recommend getting to know some post comp tricks. Post comping will save you *tons* of time in rendering and tweaking.
 
Oh hey, this is coming right along :)

Nice modeling (PSD) Sergiy... very nice :righton:

Way ta lend a hand Stroker :righton:

Keep this thread going guys, I have my pencils out and they are capturing all the info here :)
 
Serge

Thats looks very neat, especialy the top left one :righton:
I really have difficulties understanding what is were and how is that...
You see, the problems is that i had never touched on the Lighting. I`m not so much Advanced in C4D, i just learned the basics of Modeling, and it doesn`t seem to hard at all, but lighting? it is the most important and hardest part (my own opinion).
So tell me... to achieve same effect as you did. Should i use Multipass rendering into the Phtoshop, than try to get same effects as you did?
Or should i try to get all of those effects in C4D right away withou PS?
And i`m sorry if i`m being little stupid, i just Confused 8)) And thank you for all your help Stroker ;)
And Thanks for the comments Alistar and Gidge :)
 
Serg, learn both methods as far as you care too.
Knowing how to light a scene for rendering is good.
Knowing how to composite is good.

In my experience, too many people get sucked into just lighting/rendering with out knowing much about post comping.
Post comping is very powerful, and I just wanted to let you know about it.
 
Sergiy

Ok than, i`ll keep practicing more. I think i will find out how to do that, doesnt seem to hard, i just need to understand how was it done.
Thanks for the help Stroker 8))
 
Serge

For the last week, i spend a huge amount of hours Online, i read bunch of Different theories about Lighting, HDR`s and some of the light mapping. I am currently rendering the old desktop image, takes a while with Radiosity lighting, but i`m expecting to get the real soft looking effect. I`m not sure about my light, i mean the way i have setted it up. I`m afraid it will cause some unreal looking effect, but its ok i`ll re-render it again.
Anyway here is the basics i have learned last week, i guess it was exactly what you meant Stroker... oh yeah, now i understand what you meant by pure-white color for the textures ;)
Here is my practice results:
 
Personally, I would render a few different lighting passes and then comp them together in PS.
 
Back
Top