Question: SSS Skin & Alphashadows & hair

[JeffGalloway]

I have seen on this board that you need Alphashadows disabled to get a good SSS effect for skin. (I've tested it for myself and it is true, alphashadows enable kills the SSS effect)

But disabling Alphashadows created a big problem for transmapped hair, eyeleshed, etc.

How do you get around this issue?

[ch0pper]

Alphashadows disabled ]

I have never disabled these whilst rendering, but I will have a play and see what I can comeup with, never really had a problem as all my renders seem to have this enabled. Maybe you could post some of your findings be interested to see what your pictures look like

[face_off]

There was an SSS fix put through in Octane 1.13 too - so this might be different on that version. If not - then it is a general Octane issue and should be reported to Otoy.

Paul

[JeffGalloway]

Example Issue. This is done (with the poser plugin) in v1.13

[KleanZlate]

Example Issue. This is done (with the poser plugin) in v1.13

Have you tried setting Absorption and Scattering to 0 and Phase=Scattering Direction to 1?

[JeffGalloway]

Have you tried setting Absorption and Scattering to 0 and Phase=Scattering Direction to 1?

Yes, I have tried that - and it does not give the same effect that I am getting with alphashadows disabled. There is something about the alphashadows enabled that deadens the SSS effect especially in the large volumes of the body.

[face_off]

Thanks for the comparison image - very useful. I have escalated this issue to Otoy.

Paul

[face_off]

Otoy have looked at this, and been able to reproduce the problem in Octane Standalone, so it will be fixed in a future release.

Paul

[JeffGalloway]

That's good news!

[JeffGalloway]

Can you tell from this:

http://render.otoy.com/forum/viewtopic.php?f=33&t=32582

...if the fix for the above issue made it into this (1.15) release?