Hi Bill, thanks for the quick response! I would prefer not to touch the media library as I work with user generated content. For the archive page we use this snipplet to add the alt tag based on the title of the post. Would something of that sort also work for your gallery? (I am not a developer, its might be an easy change?)
/**
* Set alt value to post title for featured images in content archives
*/
function sk_set_alt_post_title( $attributes ) {
$attributes[‘alt’] = the_title_attribute( ‘echo=0’ );
return $attributes;
}
add_filter( ‘genesis_attr_entry-image’, ‘sk_set_alt_post_title’ );