dakanji/Gallery2 — pull request #2 by eliz82 (2012-03-03 19:44:53+00:00)
Title: Lensinfo read from image Exif (for Nikon DSLR cameras). 

Lensinfo is approximated using the focal and aperture. The exact lensid is encrypted for newer Nikon DSLR. It can be decrypted using the serial number of the camera.
more info: http://gallery.menalto.com/node/103489