PhotoPress is a free WordPress plugin that allows you to add additional meta-data in your WordPress media library images. You can add Cameras, Lenses, Photo Cities, Photo States, Photo Countries, Photo People, Photo Keywords, Photo Sizes, Photo Collections.
Install and activate it, upon activation it automatically adds these features as taxonomies. You can manage them all fromDashboard -> Media Library menu. Corresponding image meta-data embedded by Adobe Photoshop, Adobe Lightroom, and Capture One will automatically get populated into editable fields on WordPress’s image attachment/edit forms. It also provides you widget and template functions for displaying EXIF and taxonomy data on image attachment pages.
Taxonomy Image is another powerful WordPress Plugin that allows you to associate image of WordPress media library to category, tags and custom taxonomies. This screencast explains its usage and instructions.