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# weight

The face region’s weight.

```
var weight: Double { get }
```

## Discussion

The `weight` of a region of interest represents the pervasiveness of the face across the project as a whole. All regions of interest with the same identifier share the same weight. The values range between `0` and `1`. The default value is `0.5`.

![Four photos containing five different human faces, each showing up at different frequencies](images/com.apple.photokit/media-3030188@2x.png)

For projects focused on animation or transition between assets, focus on the regions with the highest weight to ensure that your presentation features areas of greatest interest to the user.

---

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