There is an application called Aperture Inspector that allows you to obtain a variety of information about your equipment use for the pictures in an Aperture Library.  When you open it, you link it to an Aperture library.  You can set a specific date range.  It tells you what camera bodies you used, what lenses you used, if they are zoom lenses, what focal lengths were used, what apertures were used, what shutter speeds were used, and what iso settings were used. There is also information about filters.