Why does the AI keep focusing on the shoulder?

The AI often biases toward the largest foreground object. You must explicitly command "focus on background face, foreground is completely blurred".

The "Over-the-Shoulder" Conversational Shot System

The Geometry of Conversation

You cannot shoot an entire conversation in wide-shots, nor can you shoot it in isolated close-ups. The Over-the-Shoulder shot is the glue of Hollywood dialogue, proving to the audience that these two people share the same immediate space.

Key Features

Depth Occlusion: Ensure the shoulder of Character A in the foreground is heavily blurred, while Character B in the background maintains razor-sharp focus.
The Clean "Dirty" Frame: Master the concept of "dirtying the frame" to subconsciously show the audience the physical proximity of the two actors.
Matching the Reverse: Use image-to-video anchoring to perfectly generate the exact mathematical reverse angle for the other character.

How It Works

Establish the Room: Know exactly where the characters are sitting via a wide shot.
Prompt the OTS: Prompt: "Over the shoulder shot, foreground left shoulder is blurred out, focusing tightly on the woman's face in the background right".
Cut on the Dialogue: Export perfect coverage for your dialogue sequence.