Split Diopter

Background

A split diopter holds two different distances sharp in one frame, often with a soft seam. It creates uneasy dual attention—spy craft, paranoia, impossible intimacy. Embrace the seam as style, not a mistake.

Prompt

Includes camera move matched to the title, plus lens triad extras: focal length, aperture/T-stop, ISO, shutter, white balance, and the story being filmed.

16:9 cinematic FOCUS demo titled SPLIT DIOPTER.
Technique: SPLIT DIOPTER look — foreground object AND distant face both unnaturally sharp in one frame; soft vertical seam acceptable; dual-plane attention.
Camera motion: almost locked off with micro drift; both planes stay sharp; diopter illusion is hero.
Lens & exposure: 35mm with split-diopter effect, T2.8, ISO 500, shutter 1/48, WB 4500K.
Scene: extreme foreground telephone sharp on left; European-American agent’s face sharp across the room on right; paranoia dual focus.
Look: photoreal 1970s-adjacent thriller, film grain, slightly uncanny optical style.
Forbidden: horror, gore, text overlays, watermarks, logos, vertical video.