You may use target point of camera for setup dof distanse. Then you must watch focus distance in camera settings and enter this value in corona settings tab. (for a dof)
Ok, i have learnt photographic wee bit) And say. For first pic put target on cupboard (diaphragm 4 or 4.5 for example). lámpa.jpg .
Then second image : nearest corner of table or vase. And set diaphragm 5 or 6 or little bit more. main_PP ready.jpg
Better less than bigger diaphragm for start) Small values applicable for a macro.
Of course, real camera (daily builds have this modifier for a camera, and same settings) has got diaphragm, shutter speed and iso, white balance and other.