MouseWheelSensitivity Property
Gets or sets the mouse wheel sensitivity factor. Default is 20.0f, this is the amount of world units that the camera adjusts its radial distance by on each mousewheel delta
Syntax
public float MouseWheelSensitivity {get; set;}
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also