Hello ,
Thanks for your feedback.
Right now, the DOF effect is primarily affected by the Distance value and the FOV, with lower FOV values making the effect more pronounced. This generally makes it more useful for interior shots, or when up close to the subject of focus and the background needs to be blurred, and less useful in wider angle exterior shots.
I'll be sure to pass your feedback along to the team to see if more settings can be exposed to offer more control, but please also submit it on our Public Roadmap here.
Best,
Raghib