Linear Workflow Doesn't Work - Clamped Pixel Values

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Before posting a bug report, please check the following:
1. That the issue has not already been disclosed
2. That the issue is specific to this plugin, and not Octane in general (Try reproducing it in Standalone)
Bugs related to the Octane Engine itself should be posted into the Standalone Support sub-forum.

All bug reports should include the information below, along with a detailed description of the issue and steps to reproduce it.
A. Operating System, including version (i.e. Win 7, OSX 10.11.2, Ubuntu 14.04, etc.)
B. Graphics Card(s) model (i.e. GTX 580 - 3GB, TITAN, etc.)
C. RAM Capacity (i.e. 6 GB)
D. Nvidia driver version (i.e. 7.50, 7.5.22)
E. OctaneRender Standalone version, if installed (i.e. 2.24.2, 2.23, etc.)
F. OctaneRender plugin version (i.e. v2.25 - 2.21)
G. Host application version, including build number if available (i.e. 3ds Max 2016 Build 18.0)
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User avatar (Default)
shaygold
Licensed Customer
Posts: 4
Joined: Wed Aug 24, 2016 9:15 am

Hey,

I'm trying Saving to 32bit OpenEXR but it doesn't seem to work anyway i do it.

ocio : linear Srgb \ Aces 2065-1
frame buffer : HDR
File Type : EXR (32 Bit)
response in camera \ viewport : Linear\Off

the only way I've succeeded was using octane octane version 2020.1.5_-_10.19

there it has HDR\Linear Frame buffer that can be saved.

Is it a Bug?
I'm doing something wrong?

Please Help :)

thanks
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elsksa
Licensed Customer
Posts: 784
Joined: Sat Jul 24, 2021 1:06 am

Hello,

How are you evaluating the issue/failure? Everything works as expected on 2020+ and several 2021 versions I have.

A few corrections to the information you have shared:

• ACES via OCIO is recommended to be set-up in the preferences as "Automatic". This should result in
>Manual (Octane) ACES2065-1
>Manual (OCIO) ACES - ACES2065-1
Assuming you are using the rather inappropriate default ACES OCIO configuration file/package.

• 32-bit is overkill and in VFX/CGI productions, for beauty EXR exports, 16-bit scene-referred linear is recommended.

A few important reading suggestions:
• viewtopic.php?f=30&t=77601&p=404119#p404119
• viewtopic.php?f=86&t=78275&p=403666#p403666
• viewtopic.php?f=30&t=77601&p=404119#p404147
• https://www.elsksa.me/octane containing two pages on "color-management" and ACES

Looking forward to hearing back from you with more information.
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paride4331
Octane Guru
Posts: 3821
Joined: Fri Sep 18, 2015 7:19 am

Hi elsksa,
viewtopic.php?f=80&t=78379#p404294
Regards
Paride
2 x Evga Titan X Hybrid / 3 x Evga RTX 2070 super Hybrid
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User avatar (Default)
shaygold
Licensed Customer
Posts: 4
Joined: Wed Aug 24, 2016 9:15 am

paride4331 wrote:Hi elsksa,
viewtopic.php?f=80&t=78379#p404294
Regards
Paride
I'll try the settings from the linked post.
thanks!
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elsksa
Licensed Customer
Posts: 784
Joined: Sat Jul 24, 2021 1:06 am

paride4331 wrote:Hi elsksa,
viewtopic.php?f=80&t=78379#p404294
Regards
Paride
I had several forum threads opened and did not realize it was the 3ds Max Octane sub-forum... Thank you Paride.
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