An aspect ratio is a proportional relationship between an image’s width and height. Essentially, it describes an image’s shape. Midjourney Aspect ratios are written as a formula of width to height, like this: 3:2.
For example, a square image has an aspect ratio of 1:1, since the height and width are the same. The image could be 500px × 500px, or 1500px × 1500px, and the aspect ratio would still be 1:1. MidJourney can use aspect ratio as part of the prompt writing process.
Aspect ratio parameters get normalized during processing. For example, –ar 3:2 is the same as –ar 1920:1280.
Using Midjourney Aspect ratios in prompts
Keep in mind that using dimensions in your MidJourney art will affect your final results. For example, if you want to create a full-body painting of an elf in Middle Earth, you’ll need to use an aspect ratio that’s taller than wider.
If you were to use the opposite, MidJourney would cut off the lower portion of the elf and give you the head-to-waist area.
Now, we will see some examples of aspect ratios and how they are structured: 9:16
This will give us a portrait aspect ratio
A portrait aspect ratio is best for:
- Book Cover Designs
- Pinterest Pins
- Social Media Posts
- Photographs of People
- Most Printable Art
- Close-Ups of Specific Features in MidJourney art
This will give us a landscape aspect ratio
The landscape aspect ratio is best for:
- Computer Wallpapers
- YouTube Video Thumbnails and Covers
- Facebook Cover Images
- Nature Scenes
- Concept Art
More portrait examples
More landscape examples
As you can see from the examples, choosing the right aspect ratio makes a difference in how much of your image shows up. MidJourney aspect ratio also affects which elements in the scene get focused on the most. Where do you want to lead the viewer’s eye?
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Rather than merely the size of the overall image, the MidJourney aspect ratio changes the composition. Experiment with your images and see how creative you can get with these different aspect ratios.