Having created a slideshow in AFDesigner, I thought I'd start again but making the original slides much bigger, so they could be projected onto a really big screen, such as I've seen used in classrooms, without losing any definition. However, after spending a lot of time on this I decided today, my suspicions having been aroused, to click each .mov file in the Finder and 'get info'. They are exactly the same size, about 2GB. The slides in the first measure 1120 x 560mm, and the resulting .png file measures 54mb, and in the second, 400 x 200mm, with a .png of 9.4mb. Aperture has reduced them all to the same size when exporting to .mov.
Just thought I'd mention it.
Eric Jervis 