Mastering Midjourney Aspect Ratio (--ar): The Definitive Guide
This guide covers everything you need to know about the Midjourney --ar (aspect ratio) parameter, from standard ratios like 16:9 and 3:2 to custom values for specific use cases. Learn how to choose the right aspect ratio for wallpapers, portraits, social media posts, and print layouts so your generated images fit perfectly every time.
Values & Usage
1:11:1The default square aspect ratio. Versatile for many applications, especially good for social media platforms like Instagram feeds where square images are common. It offers balanced composition and simplicity.
4:54:5A slightly taller portrait ratio, commonly used for Instagram posts and stories, as well as magazine covers. It provides a natural vertical orientation without being overly narrow, ideal for character studies or standing figures.
5:45:4A slightly wider landscape ratio, often used in traditional photography and print. It offers a subtle horizontal expansion over 1:1, suitable for conveying a sense of breadth without the extreme wideness of cinematic ratios.
16:916:9The standard widescreen aspect ratio for high-definition televisions, monitors, and YouTube videos. Perfect for cinematic scenes, landscapes, and any content meant for digital displays, providing an immersive, expansive view.
21:921:9An ultra-widescreen 'cinemascope' ratio, giving a highly cinematic and dramatic feel. Best for epic landscapes, panoramic shots, or to mimic the look of blockbuster movies. Use when you want to emphasize vastness and scale.
Example Prompts
A cinematic, wide-angle shot of an ancient civilization's ruins, capturing a sense of grandeur and mystery, perfectly suited for a film still.
intermediateVISUAL STYLE: Cinematic, GENRE: Historical Fantasy, SUBJECT(S): Ancient ruins of a forgotten city, overgrown with bioluminescent flora, TIME PERIOD: Post-apocalyptic future, COLOR: Deep emerald and obsidian with glowing accents, ASPECT RATIO: 21:9, FORMAT: Digital Painting, FRAME SIZE: Ultra-wide shot, LENS SIZE: 24mm, COMPOSITION: Rule of thirds, leading lines, LIGHTING: Mystical, LIGHTING TYPE: Ethereal glow, TIME OF DAY: Dusk, ENVIRONMENT: Jungle, LOCATION TYPE: Lost city, SET: Elaborate temple complex, CAMERA: Arri Alexa, LENS: Cooke Anamorphic, FILM STOCK / RESOLUTION: 8K, TAGS: Epic, ruins, fantasy, cinematic, overgrown, bioluminescent --v 6 --q 2 --ar 21:9
A classic portrait-style image of a whimsical character, designed for a magazine cover or social media profile, emphasizing facial features and expression.
beginnerVISUAL STYLE: Neoclassical painting, GENRE: Character Study, SUBJECT(S): Whimsical old wizard with a long flowing beard and a mischievous twinkle in his eye, TIME PERIOD: Rococo, COLOR: Soft pastels and warm golds, ASPECT RATIO: 4:5, FORMAT: Oil on Canvas, FRAME SIZE: Close-up, LENS SIZE: 85mm, COMPOSITION: Central, eye-level, LIGHTING: Soft, LIGHTING TYPE: Rembrandt lighting, TIME OF DAY: Golden hour, ENVIRONMENT: Indoor, LOCATION TYPE: Grand library, SET: Ornate armchair by a fireplace, CAMERA: Canon EOS R5, LENS: Sigma Art 85mm, FILM STOCK / RESOLUTION: Medium Format Film, TAGS: Portrait, whimsical, wizard, classical, detailed, expressive --v 6 --q 2 --ar 4:5
A standard landscape image of a serene natural scene, ideal for desktop wallpapers or general purpose use, capturing a broad vista.
beginnerVISUAL STYLE: Photorealistic, GENRE: Nature Photography, SUBJECT(S): Serene mountain lake reflecting a vibrant autumn forest, TIME PERIOD: Contemporary, COLOR: Autumnal palette, ASPECT RATIO: 16:9, FORMAT: Digital Photograph, FRAME SIZE: Wide shot, LENS SIZE: 35mm, COMPOSITION: Symmetrical, leading lines, LIGHTING: Clear, LIGHTING TYPE: Natural sunlight, TIME OF DAY: Mid-morning, ENVIRONMENT: Outdoors, LOCATION TYPE: Mountain lake, SET: Pristine wilderness, CAMERA: Sony Alpha a7 III, LENS: Tamron 28-75mm, FILM STOCK / RESOLUTION: 4K, TAGS: Landscape, nature, serene, autumn, reflection, peaceful --v 6 --q 2 --ar 16:9
An artistic, square composition of an abstract sculpture in a minimalist setting, highlighting balance and form, perfect for social media feeds.
intermediateVISUAL STYLE: Abstract expressionism, GENRE: Conceptual Art, SUBJECT(S): Glistening metallic sculpture composed of interlocking geometric shapes, TIME PERIOD: Modern, COLOR: Monochromatic with iridescent accents, ASPECT RATIO: 1:1, FORMAT: Mixed Media, FRAME SIZE: Medium shot, LENS SIZE: 50mm, COMPOSITION: Centered, minimalist, LIGHTING: Dramatic, LIGHTING TYPE: Spotlight, TIME OF DAY: Night, ENVIRONMENT: Gallery, LOCATION TYPE: White cube gallery, SET: Polished concrete plinth, CAMERA: Hasselblad X1D II 50C, LENS: Fujinon GF 63mm F2.8 R WR, FILM STOCK / RESOLUTION: High-res digital, TAGS: Abstract, sculpture, modern, minimalist, geometric, balanced --v 6 --q 2 --ar 1:1
Pro Tips
- 1Always consider your final output's destination: A 4:5 for Instagram vs. 16:9 for YouTube will drastically change your image's effectiveness.
- 2Experiment with non-standard ratios like 7:4 or 5:2 to discover unique compositional opportunities and push creative boundaries.
- 3When using extreme aspect ratios (e.g., 21:9 or 2:3), simplify your subject matter to avoid clutter and ensure the main focus remains clear.
- 4Pair your chosen aspect ratio with appropriate `FRAME SIZE` and `COMPOSITION` parameters to reinforce the intended visual narrative.
- 5If Midjourney struggles with a very specific or unusual aspect ratio, try generating at a nearby common ratio and then cropping in an external editor, or simplify your prompt details to give the AI more flexibility.
Common Mistakes
Frequently Asked Questions
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