I've been trying to search for tutorials on how to get this kind of sketch effect (if it's even called that) but could not find any good ones. As you can see the renders in this graphic look as if they're sketched and has this vintage look to it. Anyone have an idea to get this effect? Much appreciated.
EDIT:
Sorry if I'm not being too specific. Here's another example, it looks like the render has this sketchy/paint effect? I think it's filter?