31
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 20:44:28 »
Yes, gradations are way smoother. I think sRGB EOTF is fucking with light to shadow transition.
2025-07-13, 02:56:37
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32
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 19:11:28 »
Try to make an s-curve like this with corona curves:
33
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 18:55:49 »Thx for the test James, I'm dubitative with this conclusion tho. A wider colorspace only allows for a slightly better GI (corona already benefit from that). The lighting part you mention in Vray is the consequence of the tone mapping curve embedded in the ACES view transform.
Lupaz is right, the scene needs to use the same lighting (free hdri or constant color) and the same assets (I see the widows suddenly disappeared in the Fstorm scene). For those who are wondering, the textures are from the corona library. Also, matching the initial exposure is important to start on a similar basis imho.
Good to know, ill have to have a play with these settings tomorrow. Cheers!
I still find ACES a bit better (did not try to match the curve exactly tho) but that was just to show that the differences are not huge.
34
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 18:46:02 »
Thx Lupaz, they are pretty close now. I guess tone mapping is activated Fstorm ?
35
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 18:36:24 »
Thx for the test James, I'm dubitative with this conclusion tho. A wider colorspace only allows for a slightly better GI (corona already benefit from that). The lighting part you mention in Vray is the consequence of the tone mapping curve embedded in the ACES view transform.
Lupaz is right, the scene needs to use the same lighting (free hdri or constant color) and the same assets (I see the widows suddenly disappeared in the Fstorm scene). For those who are wondering, the textures are from the corona library. Also, matching the initial exposure is important to start on a similar basis imho.
I made a quick test in Vray with this HDRi : https://hdrihaven.com/hdri/?h=reichstag_1
camera : iso 1600 / F-number : 4 / shutter speed : 1/50s
Default sRGB :
ACES view trasnform with sRGB primaries (so no texture conversion) :
sRGB + Highlight compression + Handmade curve :
It took me 10s to build the curve by hand to my liking and it's really close to what ACES do and I still have control over the curve and the highlight compression.
Lupaz is right, the scene needs to use the same lighting (free hdri or constant color) and the same assets (I see the widows suddenly disappeared in the Fstorm scene). For those who are wondering, the textures are from the corona library. Also, matching the initial exposure is important to start on a similar basis imho.
I made a quick test in Vray with this HDRi : https://hdrihaven.com/hdri/?h=reichstag_1
camera : iso 1600 / F-number : 4 / shutter speed : 1/50s
Default sRGB :
ACES view trasnform with sRGB primaries (so no texture conversion) :
sRGB + Highlight compression + Handmade curve :
It took me 10s to build the curve by hand to my liking and it's really close to what ACES do and I still have control over the curve and the highlight compression.
36
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 13:55:09 »Seems like there could be a better way. Using the tag inside the VrayHDRI for sRGB or Linear. Anyway Ill stop derailing this thread with minor topics.
It's also planned
37
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 13:49:12 »
Exactly! And it's way quicker than the OCIO conversion. It's based on the filename tho, so you'll still have some work to do.
38
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 13:33:48 »
Glad it helped. I'm testing Vray 5 beta and this will be easier!
39
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 13:17:31 »
For the sun and sky you do not need OCIO nodes, you need to change the Vray internal colorspace and it's only accessible by script.
Execute this in the maxscript listener :
If you don't do this, you are rendering ACEScg textures with sRGB sun and sky
Execute this in the maxscript listener :
Code: [Select]
renderers.current.options_rgbColorSpace = 2If you don't do this, you are rendering ACEScg textures with sRGB sun and sky
40
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 12:52:47 »Yes you are correct Fluss. Textures are converted to aces cg space before rendering.
And the sun and sky (internal Vray colorspace)?
41
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-05, 12:08:32 »
James, did you convert your color textures / internal lights to ACEScg before rendering? If not your results are wrong. You need to put lin_srgb as the input (won't change that much except correcting color shifting)
42
Gallery / Re: CGI Shworeel 2020
« on: 2020-05-04, 17:26:20 »
Really nice Romuald, I loved it! Keep up the good work
43
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-04, 17:23:48 »
LMAO, you're quoting me totally out of context. If you still did not get my point then there is not so much I can do. Anyway, I'll leave it here as I don't want to pollute the thread even more. let's move on
44
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-04, 13:05:05 »
The thing is plenty of threads like this exist on the forum and they're all the same -> "Look how it's good", "Are you blind", "We want the same". Basically people moaning they want photo-real results without doing their part.
People keep posting example pictures from the internet, which they have no clue how they were made, how much post-production there is, how much effort the artist put in to look like that etc etc... Basically attributing the fact that the image looks good because of the renderer and not because of the artist.
So I tried to orient the discussion on a break it down approach. If it is so simple and Fstorm is so magical, show us examples you made and compare the results with what you can produce in Corona, 1:1. It's easy to make claims, it's less to prove them. The side by side comparison I've seen so far are not as mindblowing as some of you claim it to be. I never denied there is something common to some of the Fstorm renders we've seen, I'm just inclined to understand why rather than asking for something blindly...
Everybody is allowed to express an opinion, including me! So if I find these ever returning comments useless, I am allowed to express it. The thing is those are just making the thread going in circles like the 99 others before. Now if I offended some of you by calling those garbage, I apologize for that. I'm just tired of seeing the same stuff over and over again.
People keep posting example pictures from the internet, which they have no clue how they were made, how much post-production there is, how much effort the artist put in to look like that etc etc... Basically attributing the fact that the image looks good because of the renderer and not because of the artist.
So I tried to orient the discussion on a break it down approach. If it is so simple and Fstorm is so magical, show us examples you made and compare the results with what you can produce in Corona, 1:1. It's easy to make claims, it's less to prove them. The side by side comparison I've seen so far are not as mindblowing as some of you claim it to be. I never denied there is something common to some of the Fstorm renders we've seen, I'm just inclined to understand why rather than asking for something blindly...
Everybody is allowed to express an opinion, including me! So if I find these ever returning comments useless, I am allowed to express it. The thing is those are just making the thread going in circles like the 99 others before. Now if I offended some of you by calling those garbage, I apologize for that. I'm just tired of seeing the same stuff over and over again.
45
[Max] General Discussion / Re: Tonemapping - Plz Halp
« on: 2020-05-04, 11:43:25 »
I did not ask anyone to shut up.
I'm not neglecting anything.
We are trying to answer one question. Not "did you see it ?", not "Do you like it ?", but "Why?". That's the point.
I'm not neglecting anything.
We are trying to answer one question. Not "did you see it ?", not "Do you like it ?", but "Why?". That's the point.