Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Feature Requests => [Max] Resolved Feature Requests => Topic started by: dubcat on 2017-12-16, 03:42:37

Title: Tonemapper/Colorspace stuff
Post by: dubcat on 2017-12-16, 03:42:37
I've been analyzing different render engines to see how they tackle tonemapping. One engine that stands out, and this has become the new vray meme, is fstorm.

My test scene has been 14 100x100cm planes that range from 1 light intensity to 14 (The range Corona currently support in log, ACESlog support please :( ). I've been testing white, red, green, blue.

I noticed that if you leave all the fstorm tonemapper settings at 0, it will still affect how light intensity behaves.

Linear 1 light intensity to 14

(https://i.imgur.com/Hjpgli9.png)
(https://i.imgur.com/u8rZfv6.png)

fstorm 1 light intensity to 14

(https://i.imgur.com/F4QqrbR.png)
(https://i.imgur.com/HSpHSgm.png)

Corona 20 HC

(https://i.imgur.com/zko36kB.png)

After reading a bunch of articles about ACES and XYZ space, I noticed that this behavior happens to the linear render when you go into XYZ space.

XYZ 1 light intensity to 14

(https://i.imgur.com/d3pD1O4.png)

ACES in 1 light intensity to 14

(https://i.imgur.com/4K3oTj0.png)

ACES back to sRGB 1 light intensity to 14

(https://i.imgur.com/fHaWpyD.png)

I'm no expert when it comes to this stuff, so I'm interested in hearing what you guys think.
Title: Re: Tonemapper/Colorspace stuff
Post by: JViz on 2019-02-09, 12:56:42
+1
Title: Re: Tonemapper/Colorspace stuff
Post by: maru on 2019-02-11, 15:46:18
We have this logged as a feature request. It could be a part of "reworking tone mapping" listed here: https://trello.com/b/EfPE4kPx/corona-road-map-3ds-max
At some point we will rework the VFB and various tone mapping/post processing options it offers.
Title: Re: Tonemapper/Colorspace stuff
Post by: JViz on 2019-02-13, 22:26:57
very good news. thanks
Title: Re: Tonemapper/Colorspace stuff
Post by: maru on 2019-11-26, 10:49:22
Internal IDs:
id=298809767
id=275504302
Title: Re: Tonemapper/Colorspace stuff
Post by: maru on 2022-07-14, 11:33:23
With the new tone mapping in Corona 8+ I think this thread is not relevant any more. If anyone has some further comments/features requests, please start a new thread.