Free images results:

Hamburger pictures, stock photos and images


Burger Royalty Free Stock Images
Author: Kitsen
Fast food Stock Images
Author: Garuti
Burger Royalty Free Stock Image
Author: Rikke68
Sandwich Stock Images
Author: Kosoff

Also, here are some commercial RF-licensed images that match your search criteria:  
Hamburger Stock Photo
Author: Ockra

Explore more commercial options: More Hamburger Stock Illustrations & Vectors | More Hamburger Stock Video Footage