Building on the 12.04 release of Ubuntu, which included dedicated default lenses for searching files, music, media and apps. The latest Ubuntu 12.10 release has now added a new Photo lens search facility to the operating system, making it even easier to find photographs both locally and online.
The Ubuntu 12.10 Photo lens allows users to search for photos both stored locally and online, via one simply to use interface. The Photo lens can be linked to online photography networks such as Flickr and Facebook and search locally stored photos via Shotwell.
To help find exactly what you need Ubuntu 12.10 allows you to search by name, EXIF data or tag. For more information jump over to the Ubuntu developer website for details.
Source: OMG Ubuntu