Tonemapper/Colorspace stuff

Corona Corona for 3ds Max Feature Requests
1

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 :frowning: ). 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

Hjpgli9.png

u8rZfv6.png

fstorm 1 light intensity to 14

F4QqrbR.png

HSpHSgm.png

Corona 20 HC

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

d3pD1O4.png

ACES in 1 light intensity to 14

4K3oTj0.png

ACES back to sRGB 1 light intensity to 14

fHaWpyD.png

I’m no expert when it comes to this stuff, so I’m interested in hearing what you guys think.

2

+1

3

We have this logged as a feature request. It could be a part of “reworking tone mapping” listed here: Trello
At some point we will rework the VFB and various tone mapping/post processing options it offers.

4

very good news. thanks

5

Internal IDs:
id=298809767
id=275504302

6

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.