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Bathsheba renders

Posted: Thu Jun 02, 2005 6:43 am
by bathsheba
***NOTE February 23, 2006***

All renders in this thread before 2/23/2006 were made with the "beta" version of Maxwell.

***NOTE February 23, 2006***



OK, here's my thread with my name on it. Don't know how often I'll get to use it, but just in case.

This was about 8 hours with 8 bounces. Two daylight emitters at upper right, the environment is a weak blue lightdome, and there's a wall behind the object plus a red floor below it.
Image
This was leveled a bit in Photoshop, the gamut wasn't very wide. I probably should have used brighter lights and a shorter exposure. If there were colored lights I'd like to put a little one at the center of the object, but it looked kind of dumb with a tungsten or daylight-colored light there.

I was a bit disappointed that the shadow didn't develop any articulation. The object is about a meter wide and about 30cm from the wall behind it, so I wasn't expecting a totally featureless smudge. But I guess that's the effect of using emitter planes...it looks kind of weird, but then large uniform arealights aren't really found in nature.

I found that with a single flat emitter the mesh looked crinkly, as the individual facets caught the light. Adding a second emitter at a slightly different angle helped that, the object looks much smoother with two of them.

Anyway, pretty wussy as renders go, but it's as good as I'm likely to get. If one of you clever people wants to render this object, go wild: I put a zipped STL file at http://bathsheba.com/tmp/maxwell/spikeball.zip. It's about 12MB zipped, 19MB unzipped. Sorry about the size, I couldn't get it any smaller.

-Sheba

Posted: Thu Jun 02, 2005 8:22 am
by Kabe
Hi Bathsheba!

Nice to see you here - I absolutely love your skulptures!

I think that you certainly have some nice structures that you are unable to cast for technical reasons- yet ;-).

Regarding the rendering: Maxwell shines when it comes to diffuse interactions, so I would suggest to play a little with that. If the skulpture could stand on the floor, it would also add some interesting ahdows IMO.

Keep up the good work, I'm interested to see more of your stuff here!

Kabe

Posted: Thu Jun 02, 2005 9:05 am
by jotero
hello all :)
hi sheba,

nice work :) hier cult3d-demo spikeball 0,138 MB
Image
I like it :*)

ciao
torolf

Posted: Thu Jun 02, 2005 10:06 am
by tom
all amazing... i love all these math model stuff!
thank you bathsheba
thank you jotero

Posted: Thu Jun 02, 2005 10:38 am
by bathsheba
jotero wrote:nice work :) hier cult3d-demo
Verdammt, that loads fast!

Thanks, -S.

Posted: Thu Jun 02, 2005 3:35 pm
by Frances
Hi Sheba,

The smaller the object you use for an emitter, the sharper the shadows.

Neat render regardless. :)

Posted: Tue Jun 07, 2005 5:49 pm
by sjmoir
Hope you use your thread often!

Posted: Wed Jun 08, 2005 7:59 pm
by bathsheba
Gentle wrote:Especially the metal is very nice.
I like it - but maybe you should add some stronger speculars?
Maybe so. I feel like most of my renders don't look contrasty enough...they're not exactly underexposed, because the highlights are starting to blow out, but the whole image looks kind of grayish.

Here's another one of the same type of model, with a more realistic material and a lightbulb inside. I thought it went a bit better; the shadows are nice.
Image
This ran for 16 hours and got to 20 samples.

-Sheba

Posted: Wed Jun 08, 2005 9:18 pm
by tom
i think this is one of the most beautiful math object seen here :D nice setup...
if you want your images rendered with more contrast i can suggest you lowering the gamma ;)

Posted: Wed Jun 08, 2005 9:41 pm
by thomas lacroix
exellent, remind me of the 70-80's lamp with carved skin like on 'em...
will you give it a try with the upcoming SSS? :D

Posted: Wed Jun 08, 2005 11:15 pm
by Mihai
Really nice :) I can see little figures in this lamp, reaching out.

Posted: Wed Jun 08, 2005 11:54 pm
by Kabe
[Sound of jaw dropping to the floor]

Gosh... it's a nice renderer - and what a cool object that is. Looks in fact very organic, like some foam.

Really cool stuff!

Kabe

Posted: Thu Jun 09, 2005 4:29 am
by bathsheba
thomas lacroix wrote:exellent, remind me of the 70-80's lamp with carved skin like on 'em...
will you give it a try with the upcoming SSS? :D
You bet. I sure hope our optimism is going to be justified on 6/15 -- the developers have been awfully quiet lately.

-Sheba

Posted: Thu Jun 09, 2005 4:31 am
by bathsheba
tom wrote: if you want your images rendered with more contrast i can suggest you lowering the gamma ;)
OK, I'll try it. What I'd really like to know is what the heck "Burnt" does -- the docs seem pretty thin on that point.

-Sheba

Posted: Thu Jun 09, 2005 4:39 am
by bathsheba
Kabe wrote:Gosh... it's a nice renderer - and what a cool object that is. Looks in fact very organic, like some foam.
I always wanted to make models like Haeckel illustrations:
http://www.biologie.uni-hamburg.de/b-on ... fel_21.jpg
and now I can almost do it.

(There are a bunch more here http://www.biologie.uni-hamburg.de/b-online/radio )

-Sheba