The cool part about this, however, is that you aren't done with the camera or your missions just yet. A followup rare mission called Lens Some Hands will reward you with the S.E.L.F.I.E. Lens Upgrade Kit. Use this on your camera and you'll upgrade to the S.E.L.F.I.E. Camera MkII, which can be added to your Toy Box and used by any of your characters. There are three unique filters added with the Lens Upgrade Kit -- a Sketch Filter, a Black and White Filter, and a mysterious Death Filter. Unfortunately, I haven't gotten the follow up mission to pop up in my missions list just yet, but I find myself incredibly curious about that last filter and what it does. We'll have to wait and see.
Interestingly, this may tie in quite well with the new Twitter integration being introduced with patch 6.1. At present time, the system is not available on the PTR, although the opt-in option is available in the Interface/Social UI. Checkmarking the correct box will supposedly enable you to post to Twitter with the /share command, but since you can't seem to log into Twitter just yet, we've yet to see how that functionality will be handled. If it allows you to share screenshots, that camera may be even more entertaining than it is right now. As it stands, the last thing I needed was another excuse to take way too many screenshots -- but the ability to easily take shots of my own character has proven immediately useful, and I'm already wondering how many different ways I can get myself killed by snapping a selfie when an enemy is incoming. I'll try to avoid using it in LFR. I promise. Keep your eyes peeled for the new mission in patch 6.1 -- and until then, you might as well work on getting your best transmog looks together for the camera.