This policy setting lets you specify if the photograph is shown on the contact card, e-mail header, reading pane, fast search ...

This policy setting lets you specify if the photograph is shown on the contact card, e-mail header, reading pane, fast search results, global address list (GAL) dialog, Backstage, and quick contacts.  

If you enable this policy setting, photographs are not displayed in the locations listed above.

If you disable or do not configure this policy setting, photographs appear in the locations listed above.