How to use HDRI on 3D with no BLUE results

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  01 January 2008
How to use HDRI on 3D with no BLUE results

I think that I understand the theory of HDRI. I read a lot of stuff related.
After a lot of tries, I got smooth results of lighting (of course, lot of time consuming), but :

1. EXTERIOR SCENES : Always too much blue results. I thought that HDRI files have more information than color to get reallistic illumination. If I reduce the saturation, the results are not was I hope from HDRI results that I saw on the net so,

2. HDRI 3D TUTORIALS : I would like to find somewhere tutorials talking about HOW TO USE HDRI FILES ON A 3D APP (specially in EIU). I repeat, no HDRI tutorials.

3. INTERIOR SCENES: No tested. Also, I like to find tutorials on the net somewhere.

4. OBJETCS : I see the best results in this area. If the object has a little bit or too much reflections, perfect results. But I don´t get the same results on a building. I know that could be considered like an object but, for me, no results got it.

So, summary, I would like to know your experiences about it, opinions about the points described below and, like I said, tutorials of how to get the power of HDRI, obviously and specially in EIU.

Thanks in advance !
  01 January 2008
Hi Juan.
Controlling the color in an HDR is completely dependant on the HDR itself, but it is possible.

I have created a few HDRs that I can control the saturation of color just by modifying the Clamp Max. If your HDR is suitable, lowering clamp max can cut much of the color information, and give a less saturated appearance. (it works with mine, anyway)

If I can finish enough of these custom HDR's I will offer them as a group for sale. Maybe one or two freebies...
I would also like to do a training video, and I think Ian has offered to do one as well.

As for uses, HDRI is best used in exterior and object shots.
Interior architecture is a special case, because the walls of the interior will block the light coming from the HDR.

For smooth lighting you may want to open the HDR in photoshop and apply a heavy gaussian blur to smooth out the image. You can also decrease the resolution significantly. Small, blurry HDRs can light a scene very effectively. High res, crisp HDR images are really only needed for RT reflection and refraction maps.
  01 January 2008
To get rid of the blue look you need to de-saturate the maps, it's the same for any 3D app.

Clamping the max values will also help,
  01 January 2008
Thanks for you answers but, what about TUTORIALs (Ian?). May be tutorials of other applications could get us benefit talking of HOW TO USE HDRI ON 3D APP ?

  01 January 2008
I'm working on a hero tutorial right now
  01 January 2008
As somebody said, elsewhere, EiAS moust change his name for EiAN.

  01 January 2008

Here we go:

I apologise profusely for talking quickly, too much coffee
  01 January 2008
Just DLing the 3

Really, really, really thanks for you efforts.

  01 January 2008
Those videos are a big help Ian.
Thanks a LOT.

Jim Mulcahy
  01 January 2008
Fantastic vidz Ian. You truely are EIAS' shining star!!
  01 January 2008
White balance

Sounds to me like we need a white balance control embedded somewhere in the image processing pipeline.
  01 January 2008
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