Chaos Corona for 3ds Max > [Max] Daily Builds
Tonemapping playground!
Aram Avetisyan:
The new programmable, stackable and playable tonemapping is here with Corona Renderer 8 RC1!
Link: https://drive.google.com/drive/folders/1QJ_iXVzRHSdX2vUl6Z7cCHWhtQyoORnw
Apply the operators, tweak the settings, move them up and down to change the order (applied from top to bottom), try the new presets and also create and share yours!
Scene from Evermotion
Dionysios.TS:
Hi all, I've downloaded the last Daily Build RC4 and I've noticed the changes on the ToneMapper.
The new ACES OT seems great!!! It seems that there is no need to use the Advanced Filmic Mapping / Filmic processes anymore or am I wrong?
What should be the process and order for the modifiers now? LUT? ACES OT? Ecc.
Thanks in advance and you did a great job guys!
Dionysios -
maru:
--- Quote from: Dionysios.TS on 2022-04-06, 17:37:27 ---Hi all, I've downloaded the last Daily Build RC4 and I've noticed the changes on the ToneMapper.
The new ACES OT seems great!!! It seems that there is no need to use the Advanced Filmic Mapping / Filmic processes anymore or am I wrong?
What should be the process and order for the modifiers now? LUT? ACES OT? Ecc.
Thanks in advance and you did a great job guys!
Dionysios -
--- End quote ---
We're glad that you are enjoying the new features!
As to your questions:
Advanced Filmic Mapping / Filmic processes / other operators - I don't think there is ever "need" to use any of them. :) They are all different, and you can use them if you wish, or if you find them useful in getting the desired look in your images.
Order of operators - here we are also giving the users complete freedom. One thing to remember is that the operators are applied in the order from top to bottom. I would personally strongly encourage experimenting, because even if something is not "technically correct", it can still produce good-looking results. It's similar as with using the Corona Physical Material with the Complex IOR option vs using simple controls with just the base color and edge color. Or using the Corona Physical Material vs using the Legacy Material to produce some un-physical results.
I am sure there will be some users with more puristic approach, or who are used to following strict workflows to produce technically correct results in terms of color management, etc. This is fine too, and as far as I know, in such cases it makes sense to only use the exposure operator, and then apply the ACES OT operator.
maru:
By the way, this thread is awfully empty! Here are some more examples of the new ACES OT operator in action:
1) No operator at all vs ACES OT - the results speak for themselves ;) - https://corona-renderer.com/comparer/PUZsqZ
2) ACES OT vs Reinhard Highlight Compression - while these two operators have some things in common, note especially how the highly saturated materials on the spheres react to strong highlights - https://corona-renderer.com/comparer/e6y3Zd
3) ACES OT vs no operator at all - again, check out the highlights compression and desaturation - https://corona-renderer.com/comparer/tZJdk2
4) An experiment: the same scene, using the ACES OT operator in both cases - left is using the ACEScg color space, right is using the Wide RGB color space (the default in Corona) - as you can see the differences are negligible. The mostly visible difference here is in the green refractive sphere and in the overall saturation of the SSS object. There are also some minor differences because of the UHD Cache recalculation - https://corona-renderer.com/comparer/8JStH0
5) ACES OT vs no operator at all - https://corona-renderer.com/comparer/SHKcLV
6) ACES OT vs Reinhard highlight compression - https://corona-renderer.com/comparer/muavrb
7) Both images are using the ACES OT operator. One is rendered with the Wide RGB color space, the other one in ACEScg color space - take a look at the blue car - https://corona-renderer.com/comparer/SPDmwX
8) ACES OT vs no operator at all - https://corona-renderer.com/comparer/TyAiwJ
9) Both images are using the ACES OT operator. One is rendered with the Wide RGB color space, the other one in ACEScg color space - take a look at the blue car - https://corona-renderer.com/comparer/V9x2sv
10) ACES OT vs Reinhard highlight compression - https://corona-renderer.com/comparer/oD7bzE
11) ACES OT vs no operator at all - https://corona-renderer.com/comparer/WsfQg7
*By the way, the internal color space can be changed in the Development / Experimental Stuff rollout, and you need to re-render to make it work - https://support.corona-renderer.com/hc/en-us/articles/4402367677713
*Note that both the ACES OT operator and switching between different internal color spaces will make the biggest differences in cases where some kind of color blending occurs (especially in case of highly saturated colors) such as multiplication or division. This happens, for example, when: mixing lights (two spotlights with different colors mix), using refractive materials with colored absorption, using SSS, using the Corona Physical Mtl with colored Clearcoat.
Sorry for the spam! :)
Ondra:
--- Quote from: Dionysios.TS on 2022-04-06, 17:37:27 ---Hi all, I've downloaded the last Daily Build RC4 and I've noticed the changes on the ToneMapper.
The new ACES OT seems great!!! It seems that there is no need to use the Advanced Filmic Mapping / Filmic processes anymore or am I wrong?
--- End quote ---
While it currently seems that ACES OT is the "make it look nice" tool, I assume some people will still want to create their own custom tone mapping stacks to differentiate their images from everyone else using the default setting ;)
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