Chaos Corona Forum

General Category => Gallery => Work in Progress/Tests => Topic started by: snakebox on 2014-08-05, 04:53:28

Title: Apartment render
Post by: snakebox on 2014-08-05, 04:53:28

Hi everyone,

This is a low resolution preview and only about 100 passes, but because Corona is awesome! It's pretty clear how things will shape out in a 4K full quality render.

3ds Max 2014, Corona A7.1 and some basic Photoshop post.

Lighting:
1. IES lights in ceiling
2. Corona sky enviroment
3. corona sun for direct light
4. corona skyportal at window/balcony
5. plane with corona light material for the "fake" blowout view.

This is all work in progress, and I will try to post a high res version soon.

Title: Re: Apartment render
Post by: Ludvik Koutny on 2014-08-05, 08:46:01

There must be something wrong with your scene, as usually, 100 passes produce quite clean image. This looks more like 10.

Title: Re: Apartment render
Post by: snakebox on 2014-08-05, 08:54:41

I find that it depends a lot on what you have in your scene.. soft light, glossy things and especially depth of field, tend to need 150-300 passes to really smooth out, where simple scenes with white walls you can get away with way way less.

But if so, id be happy to explore what could be wrong with it? any ideas?

Title: Re: Apartment render
Post by: Ludvik Koutny on 2014-08-05, 09:58:26

It's really hard to tell..  there are too many things that can go wrong... Curtain materials can often slow down things a lot if done wrong... or too high overall material brightness, or touching MSI parameter, or glass with caustics...

Title: Re: Apartment render
Post by: snakebox on 2014-08-06, 02:21:32

Interesting, will def keep that in mind in the future.

anyway here is the same render in 3500px wide, after 291 passes.

Title: Re: Apartment render
Post by: Nekrobul on 2014-08-07, 18:45:35

Still lot of noisy areas, i sugest cheking the Albedo and curtain material. Also you can try to put some lorona light portals. If this does not help try to increase light sample multiplier 4-10 usualy works out though time per pas gets longer.

Title: Re: Apartment render
Post by: snakebox on 2014-08-11, 01:15:19

Ah finally back, thanks for the feedback. When you say Albedo is there actually a setting I can change or are you talking the general white balance of the image?  curtain material I feel like is the biggest problem, but maybe I also have to be more extreme on the GI/AA settings and Light samples as suggested.

Title: Re: Apartment render
Post by: Nekrobul on 2014-08-11, 11:22:38

Quote from: snakebox on 2014-08-11, 01:15:19

Ah finally back, thanks for the feedback. When you say Albedo is there actually a setting I can change or are you talking the general white balance of the image?  curtain material I feel like is the biggest problem, but maybe I also have to be more extreme on the GI/AA settings and Light samples as suggested.

There is special render element called CShading_Albedo.

U can ajust it by lowering the difuse level in the material settings. everything what is shown red on the albedo layer should be reajusted.

Title: Re: Apartment render
Post by: snakebox on 2014-08-12, 01:13:14

Ah yes I had a chance to look at this yesterday, it all makes a lot more sense now.

Thanks for letting me know, it will be a lot easier to tweak and make sure things are balanced.

I still find it hard to figure out when it's worth using a higher light sampler because it is slower (obviously) and more than not I can't see any real difference or improvements in my projects. Setting up a simple test scene it's easy to force a result but in my production scenes it's hard to see.