Forum: Carrara


Subject: Carrara's renderer, a comparison to Bryce...

douglaslamoureaux opened this issue on May 03, 2000 ยท 7 posts


douglaslamoureaux posted Wed, 03 May 2000 at 4:01 PM

I did a comparison between Carrara's raytrace renderer and Bryce. The Carrara image is on the left and the Bryce image is on the right. The Carrara image with all the bells and whistles set to "best quality" looks pretty bad, especially compared to the Bryce output. it doesn't look real at all. Anybody have any idea how to fix it? I used the same .obj model (four concentric spheres*), default glass texture, a simple monotone plane and sunlight in both programs. I used the four seasons plug-in in Carrara to create the sky. I clicked all the bells and whistles to try and load up Carrara as heavily as possible. I just feel that I must be overlooking something. I prefer Bryce's output, even if it took over five hours to render. There is no comparison in rendering time, Carrara only took a minute and a half, but if it can't produce a better quality image, its a piece of junk. I must admit, there are probably many situations where Carrara's renderer will be fine, maybe even great. This is just one area where the internal physics of Carrara appears to be weak. Interesting enough, Bryce chokes on overlapping transparencies. The same four spheres not overlapping took only thirty minutes to render in Bryce.

MarkBremmer posted Wed, 03 May 2000 at 6:12 PM

glass1.jpg I dunno.....I think it's more about how you use the tools. :) Mark






douglaslamoureaux posted Wed, 03 May 2000 at 6:22 PM

most humble apologies, I just assumed that the default glass in Carrara would already have refraction set. I'm the dummy for not checking. Thanks!


MarkBremmer posted Wed, 03 May 2000 at 10:19 PM

We're all learning. Otherwise, it wouldn't be any use visiting. I've picked up some really cool tips at this forum. It's a good group. Mark






Gabi posted Thu, 04 May 2000 at 5:44 AM

Nevertheless, rendering caustics is a feature missing in Carrara (unfortunately), but can be faked in Bryce, as you can see from the examples. That is something I already complained about. Gabi


MarkBremmer posted Thu, 04 May 2000 at 8:50 AM

Too true! I usually create a glass caustic gel on a spot and place it in the shadow area to fake it. Same for radiosity type of stuff. DCG glow extension is a great radiosity work-around though. Mark






hoborg posted Thu, 04 May 2000 at 11:28 AM

I thought there was something fishy about that first image. :) Tell me, did you use the default shader in the texture room? Or did you take it from the presets in the library? Hoborg