The 41-megapixel sensor, Zeiss lens, and the overall hardware construction of the imaging system is just part of the picture snapping capabilities on the new Nokia Lumia 1020. A huge part is played by the Nokia Pro camera, bundled out of the box with the Lumia 1020, just like the Nokia Smart Cam comes with the Lumia 925.
Allowing you to manually tweak most of the settings to achieve the best looking stills, the Nokia Pro Camera app will also arrive to other Lumia phones later this year. Official wording from Nokia mentions the Lumia 920, Lumia 925, and Lumia 928, as phones that will get the app, after the Amber update. The Lumia 925 already ships with the Amber update and, at its launch, we heard that the Nokia Smart Cam app will land on other phones. Apparently, either Nokia changed its mind and it will instead push out the Pro Camera app, or both will be available. We’ll let you know more as soon as we find out. For the moment, things aren’t clear (and another example is Oggl, promised as a Lumia 925 exclusive which never landed, now promised as a Lumia 1020 exclusive).
Source: Nokia Conversations