Set width for Image
<Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="WPF" Height="300" Width="400"> <StackPanel Orientation="Horizontal"> <Image Margin="-30" Opacity=".7" Source="c:\image.gif" ToolTip="Middle Image" Width="150" /> </StackPanel> </Window>