>>5836024Yes, I even 3D scan some places for reference usage.
>>5836030You can use Blender's freestyle feature to extract the lines off a 3D scene, is not perfect and requires some manual fiddling or editing sometimes (see pic related marked with red)
Just for the love of god, add manual smaller details, imperfections, hatching and objects by hand afterwards so it doesn't look so cheap/sterile/3D.
>>5836170Because they're doing a very simple version of it, incomplete you might argue.
Look at Hiroya Oku backgrounds (Gantz, Gigant, Inuyashiki).
Also this
>>5836211Even some eromangaka also use 3D elements.