I'm currently working on some improvements for my rendering pipeline. (improved the lighting, material shading, depth of field, bloom and SSAA):
The shader of the lion's head looks very good.
But I'm a little bit confused about the DOF shader. It looks more like a model with a very low-res texture. The edges (border) of the model is too sharp. I think this is the reason why the ball with the white texture looks much sharper than the basin/bowl under the ball.