@Hornet: Poser users like to show their work. What I mean by this is that they like to show off the background props when they've spent time setting them up. That's fine except it distracts from the main "focus" of the image. Focus is what you should be using in this image to separate the figure from the background. In Superfly it really doesn't add any render time to check the DOF box and set the camera focus. Even if this is just a background image or the back of the Envirosphere get into the habit of setting up your focus and rendering with DOF on.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740