It's important to note that in order for Camera Extras to function optimally your phone must be running the Windows Phone 7.5 Refresh ("Tango"). The Nokia Lumia 900 (global variant) and Nokia Lumia 610 shipped with this version. The "Tango" (8773) update is now widely, but not universally available, for the Nokia Lumia 800 and Nokia Lumia 710.
Here's our description of Camera Extra's functionality from our earlier post:
The new camera features are accessed via the Camera's apps settings button. Camera Extras modes are shown in a list above the existing Photo Camera settings list.
The self-timer mode gives you a time delay of 10 seconds before a photo is taken, with an audio and on screen countdown. This is ideal for taking self portraits or for when you want to everyone in a group shot.
The action shot, essentially a burst mode function, lets you take a series of photos in sequence, over just a few seconds. This allows you to "freeze" an action (e.g. throwing a ball) in a series of still images, which can then be combined together into a collage or turned into a short animation. After taking an action shot you can choose to delete specific images or delete all images from those captured.
Panorama creation mode guides you through the creation of a panorama, where multiple photos are stitched together to create one larger photo.
Smart Group shot functionality offers the ability to take multiple photos of a group of people, and select the best facial expressions from each photo to create one complete (and hopefully pleasing) group portrait. Smart Group Shot is an implementation of the Smart Rewind concept that has been demoed by Scalado on a number of devices.
Our app tracking indicates that Camera Extras is now available in the following markets: AE, BH, IQ, QA, SA, BG, CZ, DK, AT, CH, DE, AU, GB, HK, IE, IN, NZ, PH, SG, US, ZA, AR, CL, CO, CR, ES, PE, VE, FI, BE, CA, FR, IL, HR, HU, ID, IS, IT, KZ, MY, NO, NL, PL, PT, RO, RU, SK, SI, SE, TH, TR, UA, VN, CN, TW. The remaining markets (Baltic states and Mexico) are expected to follow in the next few hours.