In Wordpress single.php post pages are both for media attachments (e.g. http://domain.se/postname/imagename/) and blog post pages.
What conditional tag can I use to determine if a post is not a media attachment but a normal blog post?
The reason why I want to determine this is because at the moment I have customized the single.php file to with additional fields that I need for the single post blogposts and as it is now the customized fields show up empty on the media attachment pages too which looks bad.