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split diopter
Subject
A lens attachment that renders both a close foreground subject and a far background in sharp focus, with a characteristic blur line—a suspense film staple.
🧠 Twin Realms in Focus
A split diopter is a half‑lens attachment that allows two subjects at vastly different distances to remain in sharp focus simultaneously. The result is a single frame with a vertical or diagonal blur line separating the two focal planes, often used to connect a character with a distant element without cutting.
Where to apply cinematic storytelling, particularly in suspense or dual‑focus scenes; also useful in conceptual editorial shots where foreground and background must both be legible and symbolically linked.
Full prompt
split diopter photograph, a man's intense face in the foreground sharply focused while a distant skyline through a window is equally crisp, the vertical divide subtle yet present, soft window light, 35mm lens, Portra 400 color grade, --ar 16:9
Model: ChatGPT Image · 2.0
Jun 13, 2026
Made with split diopter
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