161 lines
5.1 KiB
Markdown
161 lines
5.1 KiB
Markdown
# AI Studio Image — Guia Avancado de Prompt Engineering
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## Principio Fundamental (da Google)
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> "Describe the scene, don't just list keywords."
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Paragrafos narrativos e descritivos sempre superam listas de palavras-chave
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porque aproveitam a compreensao profunda de linguagem do modelo.
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## Templates Oficiais
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### 1. Cenas Fotorrealistas
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```
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A photorealistic [tipo de enquadramento] of [sujeito], [acao/expressao],
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set in [ambiente]. Illuminated by [iluminacao], creating [humor/atmosfera].
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Captured with [camera/lente], emphasizing [texturas/detalhes].
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```
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### 2. Mockups de Produto
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```
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High-resolution product photograph of [produto] on [superficie].
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Lighting: [setup] to [proposito]. Camera angle: [angulo] showcasing [feature].
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Ultra-realistic, sharp focus on [detalhe].
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```
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### 3. Material Educacional
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```
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Create a [tipo visual] explaining [conceito] styled as [referencia].
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Show [elementos-chave] and [resultado]. Design resembles [exemplo],
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suitable for [audiencia-alvo].
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```
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### 4. Texto em Imagens
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```
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Create a [tipo] for [marca] with text "[texto exato]" in [estilo fonte].
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Design should be [estilo], with [esquema de cores].
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```
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**Limite para Imagen: 25 caracteres, ate 3 frases distintas.**
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**Para texto complexo: use gemini-pro-image.**
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## Tecnicas de Humanizacao
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### A Camera de Celular
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O segredo para imagens humanizadas esta na simulacao da camera de celular:
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- **Profundidade de campo rasa**: Lentes pequenas criam bokeh natural
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- **Ruido de sensor**: Especialmente em ambientes com pouca luz
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- **Distorcao de lente**: Bordas levemente distorcidas em lente wide
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- **Auto-exposicao imperfeita**: Areas levemente sobre/sub-expostas
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- **Granulacao**: Textura organica que adiciona vida a imagem
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### Expressoes Genuinas
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Evite poses de estudio. Descreva momentos reais:
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- "caught mid-laugh while talking to a friend"
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- "looking down at phone with slight smile"
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- "concentrating on work, didn't notice camera"
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- "turning to look at something off-camera"
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### Ambientes Reais
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Descreva cenarios com vida:
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- "coffee shop with other customers blurred in background"
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- "kitchen with used cutting board and half-chopped vegetables"
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- "desk with coffee stain ring, scattered pens, and post-its"
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- "park bench with leaves on ground, pigeons nearby"
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## Terminologia Fotografica para Prompts
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### Iluminacao
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- Golden hour, blue hour, overcast diffused
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- Window light, mixed indoor lighting
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- Backlit with lens flare
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- Open shade, dappled forest light
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### Lentes e Camera
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- 85mm portrait lens, 35mm wide angle
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- f/1.8 shallow depth of field
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- Smartphone camera, iPhone quality
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- Natural bokeh, creamy background
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### Composicao
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- Rule of thirds, off-center subject
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- Leading lines, natural framing
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- Negative space, breathing room
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- Layered depth: foreground/midground/background
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### Textura e Detalhe
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- Visible skin pores and natural blemishes
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- Fabric texture, material quality
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- Environmental texture: wood grain, concrete, brick
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- Water droplets, steam, atmospheric particles
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## Niveis de Complexidade
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### Prompt Simples (Bom)
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```
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Mulher jovem tomando cafe em cafeteria, luz natural da janela
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```
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### Prompt Intermediario (Melhor)
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```
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Young woman sitting by a large window in a cozy coffee shop, holding a
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warm latte, morning sunlight creating soft shadows, genuine relaxed smile,
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wearing a casual sweater, taken with smartphone
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```
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### Prompt Avancado (Excelente)
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```
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A medium close-up photograph of a young woman in her late 20s sitting at
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a wooden table next to a large cafe window. She is holding a ceramic latte
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cup with both hands, steam visible, looking slightly to the side with a
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genuine warm smile. Soft morning sunlight streams through the window creating
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natural shadows across the table. She wears a casual cream knit sweater with
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slightly pushed-up sleeves. Her hair is naturally styled, not perfect.
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Background shows blurred cafe interior with other customers. Taken with a
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smartphone camera, natural depth of field, no professional lighting or flash.
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Real skin texture visible, subtle freckles. The image feels warm, authentic,
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and completely unposed — like a friend snapped this photo across the table.
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```
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## Erros Comuns a Evitar
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1. **Prompt muito curto** → Resultado generico
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2. **Lista de keywords** → Menos natural que narrativa
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3. **Pedir "perfeicao"** → AI gera algo que parece artificial
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4. **Esquecer o contexto** → Fundo generico/vazio
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5. **Nao especificar camera** → Modelo assume DSLR profissional
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6. **Pele "perfeita"** → Uncanny valley, parece falso
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7. **Iluminacao de estudio** → Mata a naturalidade
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8. **Poses de modelo** → Stock photo vibe
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## Features Avancadas
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### Multi-Turn (Gemini)
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Use chat para iterar:
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1. Gere a imagem base
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2. "Move the coffee cup to the left"
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3. "Make the lighting warmer"
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4. "Add a small plant in the background"
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### Reference Images (Gemini Pro)
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Envie ate 14 imagens de referencia:
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- 6 para objetos (alta fidelidade)
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- 5 para pessoas (consistencia de personagem)
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### Thinking Mode (Gemini Pro)
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O modelo "pensa" antes de gerar — cria composicoes intermediarias
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para refinar o resultado final. Ideal para cenas complexas.
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### Search Grounding (Gemini Pro)
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Gera imagens baseadas em informacoes em tempo real da web.
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