---
title: maxPhotoDimensions
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avcapturephotooutput/maxphotodimensions
---

# maxPhotoDimensions

The maximum resolution of the requested photo.

## Declaration

```swift
var maxPhotoDimensions: CMVideoDimensions { get set }
```

## Discussion

Discussion Set a value for this property to request images up to the specified dimensions. Images that a photo output returns may be smaller than the dimensions, but are never be larger. Once set, you can request images with any valid maximum photo dimensions by setting maxPhotoDimensions on AVCapturePhotoSettings on a per photo basis. The dimensions you set must match one returned by supportedMaxPhotoDimensions for the current active format. tip: Changing this property may trigger a lengthy reconfiguration of the capture pipeline, so set this value before calling startRunning() on the capture session.