imagefield_import.module will allow users with the proper role to be able to import a large number of images into a CCK content type that contains an imagefield.
The user can configure the node type and target imagefield that the images will be imported
into using the settings form at admin/settings/imagefield_import
FTP/SSH access is required to upload the photos to an import folder that you set up in your file structure.
The image.module, or image_import.module will likely cause conflicts.
This module requires imagefield and CCK.