Exifer is a nearly free software (you only should send me a postcard if you're using Exifer frequently) with which you can manage the metadata (EXIF/IPTC) of pictures taken by digital cameras.

Because many image processing software destroys this metadata when saving such files, the idea was to create a backup of the metadata before editing it in any software, and then, after that to restore it back into the processed file. With Exifer you can do this very easily.

Note: All image processing software I know (e.g. ACDSee) destroys at least the EXIF makernotes after saving. Exifer doesn't!

Features
Supports EXIF (up to 2.2) and IPTC data in JPEG and TIFF files
Reading and displaying of makernotes by Canon, Casio, Fuji, Minolta, Nikon and Olympus
Backing up, restoring and comparing metadata (EXIF/IPTC)
Editing of metadata (for JPEG files only)
Inserting EXIF data from THM files (for JPEG files only)
Creating/inserting/rotating EXIF thumbnails (for JPEG files only)
Customizeable view of metadata
Export/import of metadata (CSV, Canto Cumulus, descript.ion files)
Renaming and redating with various formats
Lossless rotation (for JPEG files only)
Cropping (with aspect ratio)
Watermarks
Slideshow
Supports English and German language