hdri metal

[jovy]

could someone please explain how I can use a hdri map to make objects reflective.
The link I found in another post was broken -- is there a good tut somewhere on this subject.

Any links to giving my aluminum material a typical metal contrast with highlights
without affecting my backround would be extremely helpful

In my opinion the software would benefit if the basic textures have good material specific textures attached by default.

[jovy]

Re: hdri metal

your shiny objects in the making materials tut have a hdri reflection however there is no explanation how this has been attached. Am I overlooking something here? Please explain...

[Micha_cg]

Re: hdri metal

You can set two kind of environment at the Vray Options -> Environment: GI for GI lighting and Background for all visible issu like reflection/refraction/background. The next release will support independent maps for each.

[jovy]

Re: hdri metal

micha

in your starter kit for the hdri set up you mention to download the scene and maps... I cant find any link to do this...

please resolve

[jovy]

Re: hdri metal

I got the hdri setup working

;D ;D ;D


some studio lighting hdris would be great

could anyone send me some images or know any good non commercial recources?

Also: is it possible to create hdris from a bitmap created in Illustrater in cs2?

[Micha_cg]

Re: hdri metal

You can use every image for lighting - LDR or HDR. Search at this forum and you will find texture and HDRI links. Also use google and search HDRI+free or only HDRI.

HDRIs are good for soft lighting, but avoid strong local high intensities, this cause noise and long render times. If you use HDRIs, that use a blury one for GI lighting and a sharp version for the visible background.

[jovy]

Re: hdri metal

just want to use studio hdri as reflectionmap

the problem with using regular bitmap from illu was that it was a little washed out .. no crisp whites .. thats due to low dynamic range i guess

[Micha_cg]

Re: hdri metal

Yes, to low dynamic will wash out the image. But on the other side, if you use the full range of a LDRI, than it is not so bad - 1:255. Additional you can blow up the contrast of a LDRI per texure gamma override at value below 1.

[jovy]

Re: hdri metal

:-\ :-\ :-\

can you expand.....

how would i do this

[Travis Serio_cg]

Re: hdri metal

Micha's right, an LDRI wont 'glow' like an HDRI reflection map. Here's a simple one that I made in V-Ray that creates some decent reflections for jewelry related renderings. It works best on the env map channel vs trying to use it as a GI solution. It would need to be pre-blurred. hopefully it'll help or at least get you started.

see below for updated link

[Travis Serio_cg]

Re: hdri metal

btw, to make that map, i just made a few planes, created an emitter material and applied it to the plane. rendered it at 800x400 and saved it as an HDR direct from vray's VFB. while this isnt the most perfect form of true to life lighting, it does a pretty dang good job for reflections on metals.

[jovy]

Re: hdri metal

very nice -- just what i was looking for

I didnt think about rendering the hdri in vray

;D ;D ;D

[Travis Serio_cg]

Re: hdri metal

no problem, glad to help.

[siggi40]

Re: hdri metal

travis can you refresh the dead link ?
Thanks

[Travis Serio_cg]

Re: hdri metal

whoops, sorry about that, we changed hosts a few weeks ago and the site is all screwy. I posted it here.

the hdri.

http://cadcamtrav.com/vray/Studio%20Lighting.rar




The intended use sample.