Midjourney prompt weights

Midjourney prompt weights consider two or more separate concepts within a prompt individually. This is done using the :: separator.

Prompt weights are a way to shape your image generation by weighting the text in your prompts.

For instance:  car:: paris:: summer

Image weights are a way to shape image generation when using an image(s) as part of your image prompt.

For instance: car paris summer --iw .75 

Note: you can use both types of weighting together for an even more powerful effect.

When writing weighted prompts, a number added to each part signifies its importance in the final image. The numbers tell MidJourney, “this part needs to be x-times more prominent than this part.”