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  • Stable Diffusion
  • Weighting Syntax
  • MidJourney
  • Weighting
  • Examples Prompts
  • Combining Image Input with Text Weights
  1. Image Generation Guides

Parameters

Stable Diffusion

Weighting Syntax

Stable Diffusion supports both parentheses and numerical weights for emphasis:

  • Parentheses for Emphasis:

    • (keyword) increases emphasis slightly.

    • ((keyword)) increases it more significantly.

    • (((keyword))) or additional parentheses for even stronger emphasis.

  • Brackets for De-emphasis:

    • [keyword] reduces the importance of the keyword.

  • Numerical Weights:

    • Use keyword:weight to directly set the weight.

    • Example: a cat:1.5, a dog:0.5 gives more prominence to "cat" than "dog."

    • Typical weights range from 0.0 (ignore) to 2.0 (high emphasis).

Combining Weighted Terms

Stable Diffusion allows complex prompts with weighted phrases:

  • Example Prompt:

    A beautiful ((sunset over the ocean)):1.5, [a city skyline]:0.7, colorful skies:1.2

    • This prioritizes the sunset while de-emphasizing the city skyline.

Impact of Weighting

Weights directly influence the model’s focus, but the results depend on:

  • Model Training Data: Some concepts or terms may already be prominent or weak due to the dataset.

  • Prompt Complexity: Overloading the prompt with high-emphasis terms can dilute results.

  • Inherent Ambiguity: The model interprets prompts probabilistically, so multiple runs might slightly differ.

Using AND/OR for Advanced Control

You can separate concepts using AND for better multi-object composition:

  • Example:

    A futuristic city:1.2 AND a dragon flying in the sky:0.8

    • This creates a balance between the city and dragon elements

Examples

  • Detailed Portrait:

    A ((realistic portrait)) of a woman with blue eyes:1.3, wearing a red scarf:1.0 --negative (blurry), (cartoonish)

  • Fantasy Scene:

    A magical forest with glowing mushrooms:1.5 AND a fairy with delicate wings:1.2 --negative (dark shadows), (low resolution)

MidJourney

In MidJourney, weighting syntax allows users to emphasize or de-emphasize certain elements in their image prompts. This can guide the AI on which parts of the prompt are more important or should have a greater influence on the final output.

Weighting

Double Colons (::):

  • Place :: followed by a numerical weight after a specific term or phrase.

  • Example: a golden retriever::2 sitting in a field of flowers::0.5

    • The golden retriever is emphasized with weight 2 (more influence).

    • The field of flowers is de-emphasized with weight 0.5 (less influence).

Weighting allows you to emphasize or de-emphasize specific parts of your prompt by assigning a numerical weight to them. This helps you guide the AI to prioritize certain elements over others in the image composition.

Weights are specified using a :: followed by a number. The number determines how much influence the preceding word or phrase has on the output.

term1::weight1 term2::weight2 term3::weight3
a futuristic city::2, a sunset::0.5, a flying car::1

  • Default Weight: If no weight is specified, it defaults to 1.

  • Higher Weight: A number greater than 1 (e.g., ::2, ::3) increases influence.

  • Lower Weight: A number less than 1 (e.g., ::0.5) decreases influence.

  • Zero Weight: A weight of ::0 effectively ignores that term.

  • Avoid assigning very high weights (e.g., ::10) unless you want the image to focus exclusively on that element.

  • MidJourney automatically normalizes the overall influence of weighted terms in a prompt. If one term is heavily weighted, other terms with default or lower weights may be downplayed.

Examples Prompts

a dragon::1, a castle::1, a knight::1

All elements have equal influence.

a dragon::2, a castle::1, a knight::0.5

The dragon is the primary focus, the knight is de-emphasized.

a sunset::3, a beach::1, palm trees::0.8

The sunset dominates, while the beach and palm trees are secondary.

a futuristic city::2, a flying car::1 --no skyscrapers

You can use --no with weights to exclude or downplay certain elements. For instance:

This tells MidJourney to focus on the city and car but avoid including skyscrapers.

Combining Image Input with Text Weights

When combining image references and text prompts, the --iw (image weight) parameter adjusts the influence of the uploaded image(s) compared to the text. By default, --iw is 1.

[image reference link] a desert landscape::2, futuristic architecture::1 --iw 0.5

The text elements are emphasized more than the image input due to the reduced --iw value.

  • Focus Control: Highlight specific objects, styles, or themes.

    • Example: a giant robot::2, city skyline::0.5

  • Detail Reduction: Downplay less critical aspects of a scene.

    • Example: a dense forest::2, a small lake::0.2

  • Experimentation: Test different weights to fine-tune output.

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Last updated 5 days ago