Sent to you by nunok via Google Reader:
Hobbyist videographers MLZStudio and Acksonl shot these great videos featuring many cosplayers and their awesome costumes over at Katsucon 2013 a few days ago, and the end results are pretty fantastic! Check 'em out above an below! Oh, and don't forget to switch the quality of the footage over to 720p after hitting the play button!
Edit: And here are a few extra videos from the event I stumbled on after initially writing this post.