How do you make grouped objects a focus point without moving the camera? In my blend, I am trying to focus on a pile of doughnuts and then focus on them. While doing this, blurring the background and the side windows without losing some of the detail on them but making them quite blurred. How would I do this? I Have tried making an object a focus but it is not achieving my desired finish. This is a sort of blur I am looking for...



I will atatch my .blend file if you would like to see.
Add an empty and place it where you want to focus.



Set the empty as the focus object and lower the value of he F-stop to reduce the depth of field.





You might need to increase the number of samples to deal with noise.