Quick question about the normals passes.  In maya you are given 3options, 
camera space, object space, and word space....is one more accurate than the 
others when it comes to relighting? Or is it simply a matter of preference and 
how to use the plugin?


Out of curiosity,

Has anyone ever had success with using nuke's relighting or any relighting with 
hair renders?
Using a pos pass and normals.

Steve


Sent from my iPad

On 2012-05-30, at 1:56 PM, Howard Jones <[email protected]> wrote:

> Somewhere I have/had it but I tend to do all this with world position, 
> normals and one of the 3d keyers such as P_matte which is my favourite of 
> them. 
> 
> If I can find it I'll send it on but I seem to remember I simply downloaded 
> his script from the master class resources. 
> 
> H
> 
> From: Ron Ganbar <[email protected]>; 
> To: Nuke user discussion <[email protected]>; 
> Subject: Re: [Nuke-users] HDRI Lighting in Nuke 
> Sent: Wed, May 30, 2012 8:57:30 AM 
> 
> Hi Paolo,
> naturally I can do it in Atomkraft, but I'm thinking regular Nuke for now.
> 
> Tahl,
> good idea about the Environment light, but I was thinking what Roy did in 
> that same masterclass with the whole spherical harmonics thing. Anybody ever 
> had a look at that and collected it all to a usable gizmo?
> 
> Thanks,
> Ron Ganbar
> email: [email protected]
> tel: +44 (0)7968 007 309 [UK]
>      +972 (0)54 255 9765 [Israel]
> url: http://ronganbar.wordpress.com/
> 
> 
> 
> On 30 May 2012 09:51, Paolo Berto <[email protected]> wrote:
> Hey Ron,
> 
> you can easily do it with AtomKraft, even with the free version you can use 
> SH and it is pretty fast :)
> 
> - Lay down an AtomEnvironment
> - Plug in your HDRI (if not latlong you can use SphericalTransform)
> - Set mode to "Accurate" for SH (spherical harmonics). Just FYI the 
> "Approximate" stands for bent normals.
> 
> If you also need real shadowing from the environment you can:
> 
> - turn AENV shadows from "off" to "simple" to also have proper shadow from 
> the HDRI environment (when using shadows you should use a proper sample count)
> 
> If you instead just need plain environment occlusion :
> 
> - connect another AENV with no texture plugged (default is white environment) 
> and 
> - set shadows to simple, and samples accordingly.
> 
> 
> Note that:
> 
> * The relative AOVs are properly filled.
> * There are many other combinations (plain environment reflections, raytraced 
> reflection of the environment according to the BRDF, multiple textures for 
> diffuse & specular...) that you can achieve, we are planning a simplification 
> of AENV along with presets as it is a bit overcomplicated for a comp artist.
> 
> Beers,
> 
> P.
> 
> 
> 
>  
> 
> On Wed, May 30, 2012 at 2:04 PM, Ron Ganbar <[email protected]> wrote:
> Hi Guys,
> does anyone do HDRI based Lighting in Nuke? How can one do that, I wonder?
> I remember something from the 2009 Foundry Masterclass, but it wasn't 
> straight forward by any stretch of the imagination...
> 
> Thanks,
> Ron Ganbar
> email: [email protected]
> tel: +44 (0)7968 007 309 [UK]
>      +972 (0)54 255 9765 [Israel]
> url: http://ronganbar.wordpress.com/
> 
> 
> _______________________________________________
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> 
> -- 
> paolo berto durante
> space cowboy
> /*jupiter jazz*/ visual research — hong kong
> http://jupiter-jazz.com
> 
> 
> 
> 
> 
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