Recently, I became curious about wp_generate_attachment_metadata() & wp_update_attachment_metadata() which should be used in conjunction with wp_insert_attachment().
wp_generate_attachment_metadata() generates the following array:
The most curious about this was image_meta which is generated by wp_read_image_metadata().
So I then wondered if one could query the posts and pull all posts that have a specific camera or specific shutter speed. The answer is YES!