Wings Study Render Test Comparison (GIF)

As the title suggests, this is just a comparison of rendering tests with ZBrushCore. I'm aiming for a more relaxed atmosphere, shadowing is less harsh (more blur) but deeper. So far my renders have been on default settings, which creates a rather gray and sharp shadow, which I'd like to move away from. Instead I'd like something both subtle but with contrast. I think the shadows around the fingers show the best comparison in shadows.