28 Days Later is famous for its opening scene where it shows London abandoned. Apart from what's actually in the sequence, I think the use of camera angles and shots does a lot to create the eerie atmosphere.

There are a few main shots used. The extreme close-up...

The use of these shorts are very personal and close to the character - it allows us to empathise with them and puts emphasis on what they are feeling. As we can't see anything else, this promotes the confusion that the character is currently feeling.

The establishing shot...



These shots allow us to get a grasp of what's going on, and allow us to see the situation that the character is in. This is similar to the use of high angle shots.

The high angle or birds eye shot...



The high-angle shot emphasises the use of the establishing shot - it puts the situation into perspective, and shows just how empty London is.
The close-up...




The close-ups are used in the opening to provide context. As we can see, this close-up of a newspaper shows about the evacuation (giving context to why London is empty), similar to other shots shown of people missing.