To view student pictures for the entire course go to the Administration block and then click on the Reports tab, then click on the Roster tab.
You will then see a full list of students in the course with thumbnail pictures.
At the top of the page is the Learning mode option, when toggled on the names of the students that are under the thumbnails will be removed. With Learning mode off the associated names under the student's thumbnails will be shown.
The Group submenu allows the Roster to be filtered groups.
The Display mode option allows the view to be changed from Web report to Printable. The Printable view removes the Administration block to allow for easy printing of the browser window.