Tutorial

GPT Image 2 Complete Guide (II): Prompt structure basics

Turn luck-based guesses into repeatable results: memorize scene → subject → details → constraints, use a five-part prompt scaffold, and trade latency vs fidelity with quality.

GPTImage2 hk

People say AI images are “luck”—repeatable quality is clear intent + clean structure + explicit constraints + small iterations. Make GPT Image 2 understand you the first time, more often.

Series(I) Model selection & parameters · (III) Advanced prompt techniques · (IV) Generation use cases · (V) Editing use cases · (VI) Character consistency

Mantra: Scene → Subject → Details → Constraints

State the goal, describe the look, then lock what must not drift.

Standard prompt structure

Keep a fixed order—and name the deliverable (ad, UI, infographic, poster, photo, etc.) so the model locks the right mode:

  1. Purpose: what is this image for?
  2. Scene: where; environment; context
  3. Subject: the hero object/person
  4. Details: materials, palette, motion, lettering, mood
  5. Constraints: forbidden changes; must-preserve list

Skeleton blockquote

Generate a [purpose] image. Scene: [background]. Subject: [hero]. Show [key details]. Composition: [framing]. Avoid [no-go list]. Preserve [invariants].

Specificity + quality cues

  • Name materials, shapes, textures, medium (photo / watercolor / 3D render)
  • For realism, say photorealistic / photographic
  • Camera language steers mood—you do not need perfect optical jargon

Composition controls

  • Shot scale: macro / bust / full body / wide
  • Angle: eye-level / low / high / aerial
  • Light: soft daylight / golden hour / noir contrast / dim interior
  • If layout matters, place elements: “logo top-right”, “subject centered, left negative space”—especially for neon / cinematic scenes.

Latency vs fidelity

Speed-first: quality="low"; dense information or micro-detail: medium or high.

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