Erotic photography is beautiful, challenging, groundbreaking....

Erotic photography, more than aesthetic nude photography, focuses on sexual tension. 

 Strangely enough, it is less important here how much naked you see. Exciting clothing, a piece of jewelry or a good glance can grab the viewer without involving (a lot of) nakedness.

 Erotic photography is not pornography. It is mainly about the suggestion, not about sexual acts.