public class CIMViewCamera : CIMObject, System.ComponentModel.INotifyPropertyChanged, System.Xml.Serialization.IXmlSerializable  

{
  //Note: run within the QueuedTask
  var autoCamera = mapFrame.GetAutoCamera();
  autoCamera.Source = AutoCameraSource.Fixed;
  autoCamera.AutoCameraType = AutoCameraType.Center;

  var camera = mapFrame.GetMapView(LayoutView.Active).Camera;
  var center = mapFrame.GetViewCenter();

  //var extent = EnvelopeBuilderEx.CreateEnvelope(
  //	400748.62, 800296.4, 1310669.05, 1424520.74, mf.Map.SpatialReference);
  //autoCamera.Extent = extent;

  var camera2 = new CIMViewCamera()
  {
    Heading = 0,
    Pitch = -90,
    Roll = 0,
    Scale = 21169571,
    X = 855708,
    Y = 1112409,
    Z = double.NaN
  };
  autoCamera.Camera = camera2;
  var states = mapFrame.Map.GetLayersAsFlattenedList().First(l => l.Name == "State_Polygons");
  autoCamera.IntersectLayerPath = states.URI;

  if (mapFrame.ValidateAutoCamera(autoCamera) &&
    !mapFrame.IsMapSeriesMapFrame())
    mapFrame.SetAutoCamera(autoCamera);
}

{
  //Note: run within the QueuedTask
  var autoCamera = mapFrame.GetAutoCamera();
  autoCamera.Source = AutoCameraSource.Fixed;
  autoCamera.AutoCameraType = AutoCameraType.CenterAndScale;

  var camera = mapFrame.GetMapView(LayoutView.Active).Camera;
  var center = mapFrame.GetViewCenter();

  //var extent = EnvelopeBuilderEx.CreateEnvelope(
  //	400748.62, 800296.4, 1310669.05, 1424520.74, mf.Map.SpatialReference);
  //autoCamera.Extent = extent;

  var camera2 = new CIMViewCamera()
  {
    Heading = 0,
    Pitch = -90,
    Roll = 0,
    Scale = 21169571,
    X = 1310669.0 + ((400748.5 - 1310669.0) / 2.0),
    Y = 800296.4 + ((1424520.74 - 800296.4) / 2.0),
    Z = double.NaN
  };
  autoCamera.Camera = camera2;
  var states = mapFrame.Map.GetLayersAsFlattenedList().First(l => l.Name == "State_Polygons");
  //autoCamera.IntersectLayerPath = states.URI;
  if (mapFrame.ValidateAutoCamera(autoCamera) &&
    !mapFrame.IsMapSeriesMapFrame())
    mapFrame.SetAutoCamera(autoCamera);
}

{
  //Note: run within the QueuedTask

  var autoCamera = mapFrame.GetAutoCamera();
  autoCamera.Source = AutoCameraSource.Fixed;
  autoCamera.AutoCameraType = AutoCameraType.Scale;

  var camera = mapFrame.GetMapView(LayoutView.Active).Camera;
  var center = mapFrame.GetViewCenter();

  //var extent = EnvelopeBuilderEx.CreateEnvelope(
  //	400748.62, 800296.4, 1310669.05, 1424520.74, mf.Map.SpatialReference);
  //autoCamera.Extent = extent;

  var camera2 = new CIMViewCamera()
  {
    Heading = 0,
    Pitch = -90,
    Roll = 0,
    Scale = 20000571,
    X = 1310669.0 + ((400748.5 - 1310669.0) / 2.0),
    Y = 800296.4 + ((1424520.74 - 800296.4) / 2.0),
    Z = double.NaN
  };
  autoCamera.Camera = camera2;
  var states = mapFrame.Map.GetLayersAsFlattenedList().First(l => l.Name == "State_Polygons");
  //autoCamera.IntersectLayerPath = states.URI;

  if (mapFrame.ValidateAutoCamera(autoCamera) &&
    !mapFrame.IsMapSeriesMapFrame())
    mapFrame.SetAutoCamera(autoCamera);

}