I have a nice camera set up for my 2D xna game. Im wondering how I should make the camera have 'acceleration' or 'lag' so it smoothly follows the player, instead of 'exactly' like mine does now. Im thinking somehow I need to Lerp the values when I set CameraPosition. Heres my code

private void ScrollCamera(Viewport viewport)
    {

        float ViewMargin = .35f;

        float marginWidth = viewport.Width * ViewMargin;
        float marginLeft = cameraPosition.X + marginWidth;
        float marginRight = cameraPosition.X + viewport.Width - marginWidth;


        float TopMargin = .3f;
        float BottomMargin = .1f;
        float marginTop = cameraPosition.Y + viewport.Height * TopMargin;
        float marginBottom = cameraPosition.Y + viewport.Height - viewport.Height * BottomMargin;

        Vector2 CameraMovement;
        Vector2 maxCameraPosition;

        CameraMovement.X = 0.0f;
        if (Player.Position.X < marginLeft)
            CameraMovement.X = Player.Position.X - marginLeft;
        else if (Player.Position.X > marginRight)
            CameraMovement.X = Player.Position.X - marginRight;

        maxCameraPosition.X = 16 * Width - viewport.Width;
        cameraPosition.X = MathHelper.Clamp(cameraPosition.X + CameraMovement.X, 0.0f, maxCameraPosition.X);



        CameraMovement.Y = 0.0f;
        if (Player.Position.Y < marginTop) //above the top margin
            CameraMovement.Y = Player.Position.Y - marginTop;
        else if (Player.Position.Y > marginBottom) //below the bottom margin
            CameraMovement.Y = Player.Position.Y - marginBottom;

        maxCameraPosition.Y = 16 * Height - viewport.Height;
        cameraPosition.Y = MathHelper.Clamp(cameraPosition.Y + CameraMovement.Y, 0.0f, maxCameraPosition.Y);

    }