Re: Possible New Bug With HDRI?...Please Help... 2004-04-20 - By ccoles_avengers
Back
Okay, so it's not just me when I desperately *want* to throw in a
conventional light or two in my HDRI scene to get the characteristics
that I am looking for from my objects...
Thanks, David ;).
Claudia
"Selocic"
(a newbie)
--- In Carrara@(protected), David Bell <nordwind53@(protected)> wrote:
> Claudia,
>
> I have almost always had to back up HDRI illumination with a key and a
> fill light, and not just in Carrara. The movies have spoiled us, our
> concept of natural light is skewed.
>
> Yours,
> David
>
> On Tuesday, April 20, 2004, at 01:33 PM, ccoles_avengers wrote:
>
> > Hello Holly,
> >
> > After I sent this message I hacked around for quite a while with the
> > file (it was *really* late at that point) and noticed that the GI was
> > turned off. So that was one of the main problems I was running into
> > [I hate when that happens]. So I apologize for the alarm, but thanks
> > for the response and tip about the ambient light because I didn't know
> > about that at all.
> >
> > However, could you please tell me if I am on the right track with
> > this; I think I am finding out why things that were "shiny" under
> > conventional light appear "dull" under HDRI. When I use spot lights,
> > I use a combination of shininess and highlights to set the specular
> > highlight of an object. I do this to communicate the type of
> > smoothness that the surface of the object has. However, I am noticing
> > that this characteristics disappears when I use HDRI. In order to get
> > close to what I had before (that is to show a "shiny" or smooth
> > characteristic of an object), it seems that I have to set a little bit
> > of relection in the texture in order to bring this out when using an
> > "overcast" type HDRI map. Is this notion correct or should I still be
> > able to get specular highlights with an overcast HDRI map? Also, if I
> > were to use an HDRI map that would contain direct sunlight
> > information, would the shininess and highlight be visible like it was
> > under the spot light, without using reflection?
> >
> > Thanks again for your help.
> >
> > Claudia
> > "Selocic"
> > (a newbie)
> >
> > --- In Carrara@(protected), "hdaggers2000" <hdaggers@(protected)> wrote:
> >> Claudia,
> >> Be sure to turn on Global Illumination in the Render room (under
> >> the Rendering tab). Also, you will get better results by turning off
> >> all ambient light (by selecting SCENE in the assemble room and
> >> sliding Ambient light to 0%). You may even want to delete the
> >> Light in your scene to have the HDRI as the only light source.
> >>
> >> I rendered under your settings and got the same results you did.
> >> Without GI turned on the HDRI is only acting as background
> >> image and reflection map, not as a light source. Expect
> >> increased render time.
> >>
> >> Hope that helps.
> >> holly
> >>
> >> --- In Carrara@(protected), "ccoles_avengers"
> >> <ccoles_shado@(protected)> wrote:
> >>> Hi All,
> >>>
> >>> But much to my dismay, when I tried using the HDRI lighting
> >> scheme, I
> >>> noticed some serious problems.....
> >>>
> >>> Thanks.
> >>>
> >>> Claudia
> >>> "Selocic"
> >>> (a newbie)
> >
> >
> >
> > Special $30 OFF transposer until April 16, 2004.
> >
> > http://www.eovia.com/offers/yahoo.jsp
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
> David Bell
> nordwind53@(protected)
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