We know that after generating characters with AI, we often struggle with not being able to put characters we are happy with into different scenes. Because each time the generated character looks different. AndMidjourneyThe cref function will allow you to adjust the character's clothing, movements, background, and other elements while preserving the character's features.
It also means that you are free to create the story of a particular character.
i. use (–cref) to contact
phrasing structure: descriptive –cref reference url of picture
The following pictures are examples of reference pictures

For example, if I want Chicken to turn a basketball into a microphone, the cue could be
This caractor signature has a C4D style, with a simple, solid background. It is a full-body shot of the character, resembling a blind box to model with a high-level, three-drendrender in play media and high results, drawing us an OC renderer

We see that the generation results are still relatively consistent, with the main character's clothing, features and style maintaining consistency.
adjusting the intensity of the reference role through (–cw)
phrasing structure: descriptive –cref reference url –cw (0-100)
–cw 's numerical range is 0 to 100, which means a complete imitation of the role, and 0 means the retention of certain features, such as five officials.
Still using Chicken as an example, the CW has a value of 100 and almost the same details.

When the value of cw is 0, some of the features are changed.

III. Summary
In this section, we studied in detail Midjourney's role-coherence function-cref and adjusting the reference role strength-cw。
Hopefully this knowledge will help you get better at Midjourney and create even better work.