How to capture 48 MP Apple ProRAW?

Hello,

Is it possible to shoot 48MP Apple ProRaw with a third-party app?

Yes!

Your capture configuration needs to meet a few requirements to do so:

1. The AVCaptureDevice's activeFormat needs to be set to a format that contains a 48 MP resolution in its supportedMaxPhotoDimensions array. (you can loop over the supported formats of the device to find such a format, or you can just use the .photo preset for your capture session's sessionPreset.)

Note that the only AVCaptureDevice that has a format that supports a 48 MP resolution is the builtInWideAngleCamera of iPhone 14 Pro and iPhone 14 Pro Max.

1. Your capture session needs to have an AVCapturePhotoOutput, and it needs to be configured as follows:

            photoOutput.isAppleProRAWEnabled = true
            photoOutput.maxPhotoDimensions = .init(width: 8064, height: 6048)

1. Finally, when you go to capture the photo, you need configure the AVCapturePhotoSettings, specifying an Apple ProRAW pixel format, as well as the 48 MP dimensions:

        let query = photoOutput.isAppleProRAWEnabled ?
            { AVCapturePhotoOutput.isAppleProRAWPixelFormat($0) } :
            { AVCapturePhotoOutput.isBayerRAWPixelFormat($0) }

        // Retrieve the RAW format, favoring Apple ProRAW when it's in an enabled state.
        guard let rawFormat =
                photoOutput.availableRawPhotoPixelFormatTypes.first(where: query) else {
            fatalError("No RAW format found.")
        }

        let photoSettings = AVCapturePhotoSettings(rawPixelFormatType: rawFormat)
        photoSettings.maxPhotoDimensions = .init(width: 8064, height: 6048)
        
        photoOutput.capturePhoto(with: photoSettings, delegate: self)

With all of this, you should receive 48 MP Apple ProRAW photos in photoOutput(_:didFinishProcessingPhoto:error:)

Please let me know if these steps are not working for you!