Author Topic: Film-like tone-curves / tone-mapping  (Read 8533 times)

2013-09-04, 17:11:38

vicnaum

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The idea is: Integrate film tone-mapping/ film-color to post-processing.

I guess now the corona has it's own internal tone-mapping / tone-curves to map real raw values to their screen presentation.

And it's also obvious that digital tone-curve is very different from film-one.
There are plenty of tables on the web with transformation from the real-world lightness data units to film density.
Of course one can apply some film-presets in photoshop/lightroom/etc, but doing it as a tone-map from raw render data should be much better.

Also you can implement some log format (google for "ARRI LOG C") - that can be used by cinema guys for better compositing.

Anyways, having some "Velvia" or "Fuji Superia" tone-mapping option in post-processing should look interesting (also the random sampler noise patterns can be similar to the corresponding film-grain :-).

2013-09-04, 19:59:08
Reply #1

bair4ik

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and chromatic abberation need =))

2013-11-13, 17:38:47
Reply #2

Ondra

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Rendering is magic.How to get minidumps for crashed/frozen 3ds Max | Sorry for short replies, brief responses = more time to develop Corona ;)

2013-11-14, 17:16:33
Reply #3

vicnaum

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Great.

Here's a sample of it:
https://dl.dropboxusercontent.com/s/4u7bw5k9mhxrl52/filmcorona.jpg
https://dl.dropboxusercontent.com/s/mtoel3rxj76e0qe/rawcorona.jpg

Using EXR Linear -> CanonLog -> Fuji Astia 100 conversion (Nuke, Linear<->CanonLog LUTs, FilmConvert Canon C300 Film Profiles).

2013-11-14, 20:45:43
Reply #4

chilombiano

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I wouldn't wish keymaster to end managing film profiles over other things:). Nuke already does the job perfectly.  Maybe being able to load a lut  in the vfb just for preview purposes ...
Same with lens distortion effects. What is the point of doing that on the renderer level?

Sorry, i woke up cranky :p

2013-11-14, 23:24:55
Reply #5

Ondra

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What is the point of doing that on the renderer level?

The golden rule of Corona community is that if it exists, it will be requested as a new feature. I am seriously waiting for the moment people start requesting minigames for VFB to kill some time when rendering :D
Rendering is magic.How to get minidumps for crashed/frozen 3ds Max | Sorry for short replies, brief responses = more time to develop Corona ;)

2013-11-15, 03:13:20
Reply #6

chilombiano

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hahaha ..sure we do seem to request all kind of things!

Maybe a Tetris interactive rendering bucket mode!? ( hey..that's not even a bad idea ..imagine the level of addiction! )

Vicnaum. please don't take my comment wrong. i'm simply protecting my own "features agenda" :)  ..If you already use Nuke for Color conversions, chroma, lens dist, etc you are already using the most suitable tool for the job.


2015-01-08, 05:53:51
Reply #7

borisquezadaa

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A custom shape bucket mode!!!... ;D.
What i do with Corona My Corona post of random stuff rendering
WARNING: English.dll still loading...

2015-01-08, 13:55:08
Reply #8

maru

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Maybe a Tetris interactive rendering bucket mode!? ( hey..that's not even a bad idea ..imagine the level of addiction! )
Or snake, like on youtube!
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2015-01-08, 19:42:26
Reply #9

Juraj

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I even seen Pexeso (concentration pairing of dual cards), but never bothered to trace it.
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