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english/.opencode/skills/ai-artist/references/image-prompting.md
2026-04-12 01:06:31 +07:00

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Image Generation Prompting

Universal Structure

[Subject + Details] [Action/Pose] [Setting/Environment]
[Style/Medium] [Artist/Movement Reference]
[Lighting] [Camera/Lens] [Composition]
[Quality Modifiers] [Aspect Ratio]

Platform Reference

Midjourney v6.1

[prompt] --ar 16:9 --style raw --v 6.1
Parameter Values Effect
--ar 1:1, 16:9, 9:16, 4:3, 3:2, 21:9 Aspect ratio
--style raw, default raw=photorealistic
--stylize 0-1000 Artistic interpretation (0=literal)
--chaos 0-100 Variation between outputs
--weird 0-3000 Unusual/experimental elements
--quality .25, .5, 1, 2 Detail level (cost)
--seed number Reproducibility
--no [term] Negative prompt inline
--tile - Seamless patterns

Multi-prompt weighting: cat::2 dog::1 (cat 2x stronger) Describe: Upload image → get prompt suggestions Blend: /blend to merge 2-5 images

DALL-E 3

  • Natural language only, no parameters
  • Be descriptive, not keyword-heavy
  • Specify: "HD quality" or "vivid style" in prompt
  • Text rendering: Describe font, placement, content explicitly
  • Avoid: Lists of keywords, technical jargon

Stable Diffusion / SDXL / Flux

(important term:1.3), normal term, (less important:0.8)
Negative prompt: ugly, blurry, deformed, watermark
Feature Syntax
Weight up (word:1.2) to (word:1.5)
Weight down (word:0.5) to (word:0.8)
LoRA <lora:model_name:0.8>
Embedding embedding:name
Blend `[cat

CFG Scale: 7-12 typical (higher=more prompt adherence) Samplers: DPM++ 2M Karras (quality), Euler a (speed)

Nano Banana (Gemini)

[Narrative description, not keywords]
Captured with 85mm lens, soft bokeh, natural lighting

Key features:

  • 32K token context (complex prompts OK)
  • Narrative paragraphs > keyword lists
  • Hex colors for precision: #9F2B68
  • Text rendering: Describe font, placement explicitly
  • Multi-image: Up to 14 reference images
  • Search grounding: Real-time data (weather, events)
  • Thinking mode: Complex composition reasoning

Aspect ratios: 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9 Resolution: 1K, 2K, 4K (use uppercase K)

Best practices:

  • ALL CAPS for critical requirements
  • Markdown lists for multiple rules
  • "NEVER include..." for negative constraints
  • Photography terms anchor quality

Imagen 4 / Veo 3.1

  • Natural language, descriptive
  • Aspect ratio in text: "16:9 landscape format"
  • Veo: Cinematography keywords most powerful
  • Camera movements: pan, tilt, dolly, crane, tracking
  • Scene transitions: cut, fade, dissolve

Style Keywords

Art Movements

photorealistic, hyperrealistic, impressionist, expressionist, surrealist, art nouveau, art deco, pop art, cyberpunk, steampunk, solarpunk, vaporwave, synthwave, brutalist, minimalist

Media Types

oil painting, watercolor, digital art, 3D render, vector art, pencil sketch, ink drawing, pastel, charcoal, gouache, fresco

Photography Styles

portrait, landscape, macro, street, documentary, fashion, editorial, product, architectural, aerial, underwater

Lighting Vocabulary

Term Effect
Golden hour Warm, soft, directional
Blue hour Cool, moody, twilight
Rembrandt Triangle on cheek, dramatic
Butterfly Shadow under nose, glamorous
Split Half face lit, mysterious
Rim/back Edge highlight, separation
Volumetric Light rays visible
Neon glow Colorful, cyberpunk

Camera/Lens Terms

  • 50mm (standard), 85mm (portrait), 35mm (wide)
  • Telephoto (compressed), Macro (close-up), Fisheye (distorted)
  • Shallow DOF, Deep DOF, Bokeh
  • Low angle, High angle, Dutch angle, Bird's eye, Worm's eye

Composition Keywords

rule of thirds, golden ratio, centered, symmetrical, leading lines, framing, negative space, filling frame, foreground interest, layered depth

Negative Prompts (SD/Flux)

ugly, deformed, blurry, low quality, bad anatomy,
extra limbs, missing limbs, disfigured, watermark,
text, signature, cropped, out of frame, duplicate,
poorly drawn, bad proportions, gross proportions

Iterative Workflow

  1. Start: Subject + style + quality modifier
  2. Add: Lighting + composition + camera
  3. Test: Generate 4 variations
  4. Refine: Adjust weights, add negatives
  5. Upscale: Select winner, increase resolution