Iris In / Out

Background

Iris in/out uses a circular mask that opens or closes as a classic transitional device. It focuses attention like a spotlight and nods to early cinema grammar. Time the close on the joke or the face.

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 OPTICAL EFFECT demo titled IRIS IN / OUT.
Technique: IRIS IN/OUT — circular mask closing (or opening) around the subject as a classic transitional vignette; silent-era grammar.
Camera motion: begin open on the scene then IRIS CLOSE down to the face (or reverse iris open); iris mechanic is the hero.
Lens & exposure: 40mm, T2.8, ISO 320, shutter 1/48, WB 5000K soft daylight, slight vintage diffusion.
Scene: European-American vaudeville-style performer tipping a hat on a sunny street; iris closes on the smile; playful homage (not horror).
Look: photoreal classic Hollywood homage, film grain, warm vintage grade.
Forbidden: horror, gore, text overlays, watermarks, logos, vertical video.