Access 2007 - Why put a graphic image in an unbound object frame? vs. using the image control

Well below article describes it well:
http://office.microsoft.com/en-us/access-help/use-images-in-your-access-forms-reports-and-controls-HA001147204.aspx

Understand bound and unbound images

Before you use an image or a set of images in your Access database, you need to decide between using a bound or an unbound image. If you want your images to change as you move among the records in your database or the pages in a report, you use a bound image. Bound images typically reside in a table in your database. The table can store links to the images, or it can store the images as embedded objects. However, remember that embedded images can rapidly increase the size of your database and cause it to run slowly. For information about why images can bloat your database, see Why OLE requires additional software and adds bitmap files. For information about storing images in database tables, see Store images in a database.

If you want the image to remain constant as you move between records or pages, you use an unbound image. Unbound images can reside in your database (if you embed them in your forms or reports), on your hard disk, or on a network.

The decision to use bound or unbound images also determines the type of control that you place on your form or report. If you use bound images, you use a control called the bound image frame. To display unbound images, you can choose between either the image control or the unbound object frame, or you can add the image to your form as a background or watermark. For more information about these controls, see the next section, "Understand object frames and image controls."

Hope this helps,

Hi LSMConsulting:
What do you mean when you say "lightweight"  ?