Linear Workflow Doesn't Work - Clamped Pixel Values Tweet

[shaygold]

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

[elsksa]

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:
• https://render.otoy.com/forum/viewtopic.php?f=30&t=77601&p=404119#p404119
• https://render.otoy.com/forum/viewtopic.php?f=86&t=78275&p=403666#p403666
• https://render.otoy.com/forum/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.

[paride4331]

Hi elsksa,
viewtopic.php?f=80&t=78379#p404294
Regards
Paride

[shaygold]

Hi elsksa,
viewtopic.php?f=80&t=78379#p404294
Regards
Paride

I'll try the settings from the linked post.
thanks!

[elsksa]

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.