Quote - Mike, I'm talking about generally, too, not Poser.

Just draw something with some fine detail, like a tattoo, along V4's thigh/buttock using a 3D painting tool, where you don't have to worry about seams like in Photoshop. I don't have tools like that.

Stamp something detailed there and save it as a set of 4K image maps. Then try to render it up close.

The problem with that is, 3D painting apps tend to interpolate the lines between vertices, not actually using the UV map at the same time.
But I'll give it a try in Modo, where you can paint in 3D and 2D at the same time.