Chaos Corona Forum

General Category => Gallery => Topic started by: Sam75 on 2012-10-19, 17:54:45

Title: Classroom
Post by: Sam75 on 2012-10-19, 17:54:45

A simple test scene to learn Corona.

I used PT + HD cache, rendering time is 20mn with a i72600K.

Title: Re: Classroom
Post by: andreupuig on 2012-10-19, 18:21:32

Very convincing light.
It's the straight render from Corona or it has some post?

Title: Re: Classroom
Post by: Ludvik Koutny on 2012-10-19, 18:36:07

I think it could look even cleaner, but light passing suspended light shades creates most of the noise...  Whats the material on the light shades? :)

Title: Re: Classroom
Post by: racoonart on 2012-10-19, 19:15:44

Very nice!
I guess there's a little postwork here (especially the slight bluish and redish tint).
Increasing (and balancing) pt and light samples could speed up the rendering quite a lot

Title: Re: Classroom
Post by: Sam75 on 2012-10-19, 19:59:45

Thanks, yes I did some post in photoshop.

Rawalanche, it has refraction glossiness.

DeadClown, I am not familiar with those parameters yet.

Title: Re: Classroom
Post by: Ludvik Koutny on 2012-10-19, 20:01:33

Quote from: Sam75 on 2012-10-19, 19:59:45

Thanks, yes I did some post in photoshop.

Rawalanche, it has refraction glossiness.

I would try translucency instead of refraction glossiness...  could speed things up a bit...  not 100% sure, but so far it worked for me :)

Title: Re: Classroom
Post by: Sam75 on 2012-10-19, 20:02:45

Ok I ll try that and post the result.

Title: Re: Classroom
Post by: Ludvik Koutny on 2012-10-19, 20:03:59

Quote from: Sam75 on 2012-10-19, 20:02:45

Ok I ll try that and post the result.

Be sure to completely disable refraction and use translucency only, otherwise it wont make much of a difference speed-wise ;)

Title: Re: Classroom
Post by: Sam75 on 2012-10-21, 00:32:16

There was not a big difference between translucency and refraction + glossiness.

The other way which is using an emitting material is much faster:

Sphere lights + Translucency:

Emitting material:

Title: Re: Classroom
Post by: Ludvik Koutny on 2012-10-21, 00:33:39

That makes sense... anyway...  very interesting finding! Thanks! :)

Title: Re: Classroom
Post by: snakebox on 2012-10-22, 04:58:07

I like the initial look at and feel, how ever an image like this is waaaaayyy too grainy for any actual production. Simply just not good enough. No client want to showcase any interior that looks grainy, whether its physically correct or not. Id love to see this image after 2 hours instead of 20mins...  I suspect that with low light the grainy-ness won't go away though.

Also has anyone done any successful animation in Corona? without having totally out of proportion rendertimes and still a decent look? im curious :)   keep it up!

Title: Re: Classroom
Post by: Javadevil on 2012-10-22, 06:36:29

Quote from: snakebox on 2012-10-22, 04:58:07

I like the initial look at and feel, how ever an image like this is waaaaayyy too grainy for any actual production. Simply just not good enough. No client want to showcase any interior that looks grainy, whether its physically correct or not. Id love to see this image after 2 hours instead of 20mins...  I suspect that with low light the grainy-ness won't go away though.

Also has anyone done any successful animation in Corona? without having totally out of proportion rendertimes and still a decent look? im curious :)   keep it up!

I don't think anyone was using these for production renderings :)
It was a simple test, trying different lights and materials.

Keep looking in the gallery, there is some final renders there with times.

Maybe we need a final renders gallery and one for WIP/tests  ?

Title: Re: Classroom
Post by: Sam75 on 2012-10-23, 08:38:21

More tests

Title: Re: Classroom
Post by: Sam75 on 2012-10-23, 08:40:40

The forum is compressing the images way too much (most of the noise you see)

Title: Re: Classroom
Post by: NicolasC on 2012-10-23, 09:13:49

Nice tests ! well done :)
Is that scene available somewhere for testing ?

Thanks.

Title: Re: Classroom
Post by: Paul Jones on 2012-10-23, 10:48:54

I'm sure this was a vizdepot scene,  might be wrong though!

Title: Re: Classroom
Post by: NicolasC on 2012-10-23, 10:49:52

Quote from: jonesthesteam on 2012-10-23, 10:48:54

I'm sure this was a vizdepot scene,  might be wrong though!

oh ok, thks ;)

Title: Re: Classroom
Post by: Sam75 on 2012-10-23, 19:16:12

Sorry I don't remember where I got it but it's free and a well known scene.

Title: Re: Classroom
Post by: Paul Jones on 2012-10-23, 22:27:29

Try that...

Title: Re: Classroom
Post by: poko on 2013-10-14, 16:37:31

Here you can find more formats:
http://www.kerkythea.net/forum/viewtopic.php?f=4&t=7282
But please have look here Polymax (http://forum.corona-renderer.com/index.php?action=profile;u=798) artis did the clean render:
http://cgpolymax.blogspot.com/p/corona-renderer-tips.html
down page
Corona render 05:22sec. looks very good.

Title: Re: Classroom
Post by: bograt on 2013-10-20, 21:33:39

Nice Tests! your N3 render brings back bad memories of late winter evenings in school! pretty powerful