Guide to Using AR (Aspect Ratio) in MidJourney Prompts

When generating images with MidJourney, the AR (Aspect Ratio) parameter plays a crucial role. It determines the width-to-height ratio of the output image, helping you create visuals that suit specific purposes or stylistic needs. This article will explain the meaning of AR, how to use it in MidJourney prompts, and how to choose the appropriate AR values.

What is AR (Aspect Ratio)?

Aspect Ratio refers to the ratio of an image’s width to its height, usually expressed in the form of width:height. For example:

  • 1:1 represents a square image (equal width and height).
  • 16:9 represents the standard widescreen ratio (commonly used in movies and videos).
  • 9:16 represents a vertical screen ratio (used for phone screens and short videos).

By specifying the AR parameter, you can define the overall shape and proportions of the image MidJourney generates, aligning it with your intended outcome.

How to Use AR in MidJourney Prompts?

In MidJourney, you can specify the aspect ratio by adding the --ar parameter at the end of your prompt. For example:

  • --ar 16:9 generates a widescreen image.
  • --ar 4:5 generates a taller, vertical image.
  • --ar 1:1 generates a square image.

Examples:

  • “Sunset over the mountains, vibrant colors, detailed clouds –ar 16:9”
  • “Minimalist artwork of a cat, clean lines, flat design –ar 1:1”
  • “Lush green forest path, soft sunlight filtering through trees –ar 9:16”

Common AR Ratios and Their Uses

Here are some common AR ratios and their ideal use cases:

Aspect Ratio Example Ratio Best Use Cases
1:1 Square Social media profiles, square artworks, Instagram posts
16:9 Widescreen Cinematic scenes, landscape photography, desktop wallpapers, posters
9:16 Vertical Mobile screens, short videos (TikTok, Instagram Reels), vertical posters
4:5 Portrait-like Artistic photography, social media posts, portraits
3:2 Classic Ratio Photography, landscape shots, standard camera outputs
2:3 Tall Portrait Tall posters, artistic illustrations
21:9 Ultra-Wide Cinematic visuals, panoramic landscapes, wide displays
5:4 Near-Square Prints, album covers, artistic prints
2:1 Wide Frame Scenic art, expansive visuals

How to Choose the Right AR?

  1. Based on Output Device:
    • Mobile Screens: Best suited for 9:16 (vertical format).
    • Computer or TV Screens: Ideal for 16:9 (horizontal format).
    • Square Content: Use 1:1 for profile pictures or square artworks.
  2. Based on Content Theme:
    • Landscapes: Use 16:9 or 21:9 for a wide and immersive look.
    • Portraits: Opt for 4:5 or 9:16 to emphasize height and details of the subject.
    • Illustrations or Prints: Use 5:4 or 1:1 for balanced compositions.
  3. For Visual Storytelling:
    • To emphasize depth or height, use 9:16 or 2:3.
    • To showcase expansive spaces, use 16:9 or 21:9.

10 Example MidJourney AR Prompts

  1. “Vast desert landscape, golden hour, dramatic shadows –ar 21:9”
  2. “Minimalist art, geometric shapes, bright colors –ar 1:1”
  3. “Portrait of a woman in Renaissance style, soft lighting –ar 4:5”
  4. “Night city skyline, glowing lights, futuristic buildings –ar 16:9”
  5. “Lush green forest, magical mist, sunlight streaming through –ar 9:16”
  6. “Elegant food photography of sushi on black plate –ar 1:1”
  7. “Majestic mountains, starry night sky, deep blue tones –ar 16:9”
  8. “Fantasy castle on a floating island, vibrant colors –ar 2:1”
  9. “Close-up of delicate flowers, macro photography, soft focus –ar 4:5”
  10. “Cyberpunk street scene, neon lights, heavy rain –ar 21:9”

Conclusion

In MidJourney, effectively using the AR parameter can significantly impact the composition and visual appeal of your images. Different aspect ratios allow you to tailor the visuals to specific emotions, themes, and platforms. By simply adding --ar to your prompt, you gain greater control over the image proportions, ensuring the AI understands and meets your creative vision.

Mastering AR will enhance your ability to produce stunning and purposeful visuals!