Boba Video
  • Getting Started
    • What is Boba Video?
    • Quickstart
  • Video Generation
    • Models
    • Text to Video
    • Image to Video
    • Subject Reference
    • Extend Video
    • First-Last Frame
    • Boba Mode
  • Image Generation
    • Models
    • LoRAs
    • Upscaling
  • Speech Generation
    • Lip Sync
  • Other
    • Prompt Optimization
    • How Credits Work
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  • Image Generation Models & Prompting Tips
  • 1. Flux Dev
  • 2. Juggernaut Pro Flux
  • 3. RealVisXL
  • 4. Google Imagen 3
  1. Image Generation

Models

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Last updated 10 days ago

Image Generation Models & Prompting Tips

When you open the Image Generation tab, you’ll see four main models—each with its own strengths, runtimes, and “sweet spot” for prompt style. Choose the one that matches your vision and follow the tips below for best results.


1. Flux Dev

Versatile & Creative

  • Best for: Concept art, painterly styles, imaginative scenes

  • Prompt Style:

    • Use longer, flowing sentences that read like a mini story.

    • Emphasize mood and atmosphere:

      “A futuristic city skyline at dusk with glowing neon canals and drifting lanterns, painted in loose watercolors”

    • Include artistic cues (medium, brush type, lighting).


2. Juggernaut Pro Flux

High-Detail Rendering

  • Best for: Intricate textures, fine details (jewelry, textiles, architecture)

  • Prompt Style:

    • Break long ideas into short, comma-separated phrases for clarity.

    • Call out specific details up front:

      “Ultra-detailed macro shot of a dew-covered spiderweb, morning light refracting through droplets, shallow depth of field”

    • Add camera settings (“f/2.8,” “50 mm lens”) for realistic depth.


3. RealVisXL

Photorealism Specialist

  • Best for: Photo-like images—portraits, landscapes, product photography

  • Prompt Style:

    • Use commas to separate subject, environment, and style.

    • Include lighting & lens info:

      “A portrait of an elderly woman with crow’s feet, warm softbox lighting, 85 mm portrait lens, high-resolution”

    • Mention real-world textures (“granite countertop,” “oak wood grain”).


4. Google Imagen 3

Top-Tier Realism

  • Best for: Complex, multi-element scenes with lifelike detail

  • Prompt Style:

    • Highly structured, heavy use of commas and semicolons to guide composition.

    • Specify multiple focal points cleanly:

      “An overhead shot of a gourmet sushi platter; colorful fish roe, neatly sliced tuna, bamboo mat background; natural studio lighting”

    • Call out camera angle, depth of field, and post-processing look (“cinematic color grading”).


General Prompting Best Practices

  • Aspect Ratio: Pick 9:16 for vertical, 1:1 for square, 16:9 for landscape.

  • Detail Hierarchy: Subject → Action/Setting → Style → Camera → Lighting.

  • Iterate & Refine: If you don’t get it right the first time, tweak one element at a time (e.g., change lighting from “soft” to “dramatic”).

With these guidelines, you’ll be able to match your prompt to the right engine and get consistently stunning images. Happy creating!

Flux Dev