# precisionEstimatesPerPoint An array of precision estimates for each landmark point. ``` @property (readonly, nullable) NSArray * precisionEstimatesPerPoint; ``` ## Discussion This property is only populated when you configure your [`VNDetectFaceLandmarksRequest`](/documentation/Vision/VNDetectFaceLandmarksRequest) object with [`VNRequestFaceLandmarksConstellation.constellation76Points`](/documentation/Vision/VNRequestFaceLandmarksConstellation/constellation76Points). For other constellation types, this array is set to `nil`. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)