---
title: VNDetectFaceLandmarksRequestRevision1
framework: vision
role: symbol
role_heading: Global Variable
path: vision/vndetectfacelandmarksrequestrevision1
---

# VNDetectFaceLandmarksRequestRevision1

A constant for specifying revision 1 of the face landmarks detection request.

## Declaration

```swift
var VNDetectFaceLandmarksRequestRevision1: Int { get }
```

## See Also

### Identifying Request Revisions

- [revision(_:supportsConstellation:)](vision/vndetectfacelandmarksrequest/revision(_:supportsconstellation:).md)
- [VNDetectFaceLandmarksRequestRevision3](vision/vndetectfacelandmarksrequestrevision3.md)
- [VNDetectFaceLandmarksRequestRevision2](vision/vndetectfacelandmarksrequestrevision2.md)