8k photogrammetry (the goal was to keep the maximum detail and an 8k texture managed by Unreal Engine) /// I took about twenty photos that I integrated into the Reality Capture software / I then exported with the texture in 8k and import the fbx into substance painter to retrieve the information from Normal map / Ambient Occlusion / Roughness ... etc ... I also tested with a low and a high poly generated under ZBrush, I then reassembled the together in Unreal Engine 4 .. (I didn't tweak the rendering ..) /// Here is the workflow and the result ..