You can't. "Bokeh" is subjective and unquantifiable.
We should invent a way to quantify bokeh by measuring how not sharp the out of focus areas are! We'll be rich!
As much as it is subjective, which i agree with 100%. It is also not a coincidence that the lenses we believe to have the most pleasing bokeh also share similar MTF charts. I didnt believe this either until i started to study the charts. Obviously in the end your own opinion will out weigh it but give it a run. Look at the charts for your lenses in which you believe you have great bokeh. I know i detest the bokeh of the Canon 50 1.4 and after looking at the charts for it i can see it agrees with me vs the other competitors.
people even complain about that now!?


