Thanks Peter and Xaver, now achieved the zoom effect on the background image. I think the problem was that when I clicked on 'Mask' the background image had the green square around it. But I now have a problem with the mask. It is a PNG file which is in colour. The area that should be transparent to enable view of the background is hatched in grey and white squares as is normal and works fine. However the background image can also be seen through the areas that are not pure black in the mask. The mask works perfectly in Photoshop Elements and also ProShow Gold, any suggestions please?