Thanks Lee. I’ve already seen the news of the shader but I still have the doubt of the photorealistic behavior. Is there any improvement in that field?
Yes.
How to setup the “light group” correctly? I follow the video,specify a light group name on the light,also click the “light groups” checkbox in the AOV attribute,but nothing happen.
Hi lee,how to setup per light group correctly？any tutorial or user guide?
Arnold Rendering Blog 
Hi lee, just one question. Is the new shader more photorealistic?
It is better in every respect. See for yourself: https://support.solidangle.com/display/A5NodeRef/standard_surface
https://www.solidangle.com/arnold/try/
Thanks Lee. I’ve already seen the news of the shader but I still have the doubt of the photorealistic behavior. Is there any improvement in that field?
Yes.
How to setup the “light group” correctly? I follow the video,specify a light group name on the light,also click the “light groups” checkbox in the AOV attribute,but nothing happen.
Hi lee,how to setup per light group correctly？any tutorial or user guide?
See the bottom of these pages:
https://support.solidangle.com/display/A5AFMUG/Lights
https://support.solidangle.com/display/A5AFMUG/AOVs
Oh，Thanks！