---
title: stereoCameraBaseline
framework: coremedia
role: symbol
role_heading: Type Property
path: coremedia/cmformatdescription/extensions-swift.struct/key/stereocamerabaseline
---

# stereoCameraBaseline

Indicates the distance between centers of the lenses of the camera system.

## Declaration

```swift
@backDeployed(before: macOS 26.0, iOS 26.0, visionOS 26.0)
static var stereoCameraBaseline: CMFormatDescription.Extensions.Key { get }
```

## Discussion

Discussion The value is a CFNumber holding an unsigned 32-bit integer that is interpreted in micrometers or thousandths of a millimeter (e.g., 63123 is 63.123 millimeters). This property is optional and should only be specified if the distance is known.