I wanted to create a high resolution render (2000*1250), so I had to divide the render into two parts because my PC couldn’t manage the scene (I need a brand new machine!!).
The final image has three passes: Beauty, Ambient Occlusion and DOF ( Fig. 14, - Fig. 16 )
Fig.14
Fig.15
Fig.16
I mixed these passes in Photoshop; the Ambient Occlusion layer is above the Beauty one in Multiply mode. About depth of field (DOF), you can check out a great tutorial which explains the whole process, here: http://www.onnovanbraam.com/index.php?tutorials/depth_of_field/.
Finally, I added a brightness and contrast layer to reach the final version ( Fig. 17).
Fig.17
Conclusion:
I hope this tutorial may be of some use to you. If you have any comments or questions please feel free to email me at jaime@amidadesign.com