Thank you for your replay

hello
i tried the epsilon but the problem still exists ,here is the scene.

thank you!

hello
i tried someother formats . the .tif looks better. i changed the gamma to 1. it's a greathelp .
but i have some other problems. the miscellaneous blocks on the picture. What can I do to solve the problem .the normal?

thank you !

Hello,
i use the displace map from oceanevaluate.but in octane it seems no work to the grid.
what's wrong with my setup?
my problem screenshot below the Posted attachments

thank you!

thank you for your help!

hello
i want to ask how to use Render layer mask in Houdini. i set the objectID but It doesn't seem to work

thank you!

hello Juanjo
I have already solved this problem.
I do not change the transmission . so there is no effect of sss.
Anyway, thank you for your reply

hello
can you tell me why my Medium_Scattering has no effect , my octane is Octane_2020.1.5.2_Houdini_18.5.351_vr_Win64 .my houdini is Houdini FX 18.5.351
thanks !

Thank you very much!

Hello , can you tell me , how to use the two file "rgb4k_map.ppm"and"alpha4k_map.ppm", i render the particle which has Cd attribute ,but i can`t get the correctly result.
thanks