Nokia Pro Cam is a camera app that is currently only available on the new Lumia 1020. It reminds me a lot of the Windows Phone photography app ProShot or Camera360 in that Pro Cam gives you more control over the camera's settings.
While the Lumia 1020 is just hitting store shelves today, the Pro Cam app is seeing its first consumer update. The update for version 18.104.22.168 brings more user control to the table with a bracketing setting.
The bracketing setting will allow you to take 3 or 5 exposures at a range of exposure settings. The ranges available are -.5EV to +.5EV, -1EV to +1EV, and -2EV to +2EV. Bracketing is a great tool when you're not sure what the best exposure is and you don't want to spend a lot of time tinkering with settings between shots.
For those who haven't seen the update notification push through, you can find Nokia Pro Cam here in the Nokia Collection of the Windows Phone Store. It is our understanding that eventually Pro Cam will become available for other Lumia devices but for now, it's an exclusive for the Lumia 1020.