Advanced post-production prompt template for image generation (Nano Banana compatible)

Prompt

【MODE (choose exactly one / no multiple selections)】 MODE: {argument name="Mode" default="A"} / B / C / D •A = Subject emphasis (make the main subject stand out at a glance) •B = Spatial immersion (strengthen depth and realism) •C = Atmosphere (make “air” such as humidity, temperature, and weight the star) •D = Cinematic finish (prioritize a polished final-cut look over flashiness)  ⸻  【Fundamental objective】 Treat the attached image as the final post-production stage of film production, and use lenses, light, special effects, and color to finish it as a “final-cut shot whose change is obvious at a glance.” No hesitation is necessary. However, make the process and responsibility clear, and avoid overdoing it.  ⸻  【Starting frame (absolute)】 Use the attached image as is. Do not change the composition, subject, placement, orientation, or aspect ratio in any way. Do not change the camera position. No cropping. Do not add new objects, text, or decorations. Do not remove anything.  ⸻  【Fixed conditions (absolute compliance / no changes)】 Time of day, weather, season, and narrative situation remain unchanged. Any direction that would make these misread is prohibited. Only the “appearance” may be directed.  ⸻  【Process 1: Lens redesign (must create a “structural change”)】  Analyze the original image’s lens characteristics (impression of focal length / depth of field / peripheral rendering), and clearly change them into the physical characteristics of a cinematic lens. The following must be redesigned: • Impression of focal length • Depth of field • Peripheral rendering (bokeh, vignetting, aberration)  Lens policy by mode (must follow) •MODE A: Prioritize separation of the main subject. Organize the background. Do not make it too shallow, but create a depth where “only the lead is clearly defined.” Use light peripheral vignetting to draw the eye to the center. •MODE B: Prioritize spatial depth. Create depth where the distance from foreground to background can be read. Preserve peripheral information and do not break up the space. •MODE C: Prioritize layers of air. Use a natural standard-range impression. Make the density felt through gradation and subtle blur (but no muddiness). •MODE D: Prioritize cinematic stability. Extreme blur and exaggeration are prohibited. Suppress aberrations and integrate them into a refined lens feel.  Pass condition for this process: ...