Before uploading images I use an application to remove camera details from the images. It is called Batch Purifier (free version). It works good and fast. Here is a download link: http://www.digitalconfidence.com/BatchPurifier.html.
I have the same problem with Search & Filter Pro. This is a WordPress plugin: it is an advancement of the WordPress search box, adding taxonomy and post type filters to refine searches. Search & Filter Pro does not recognize gmedia_gallery nor gmedia_tag.
However it is possible to search the Gmedia Library with Search & Filter Pro by adding this text in your post or page:
[searchandfilter post_types=”post,page,gmedia” fields=”search,post_types” types=”,checkbox”]