Add a backdrop + studio lights in Houdini

Add a backdrop + studio lights

add box node delete all faces, except bottom and back add polybevel node for the edge to make it round add reverse node to get normals

add area light

check render light geometry uncheck normalize light intensity to area check self shadow texture map: /files/Soft Box A.exr sampling count: 2 (removes noisy shadows) then add one GI light (speeds up render!!) photon count: 200000 filter samples: 100