The Samsung Galaxy S4 Zoom hoped to wrestle away camera phone superiority from Nokia by adding an optical zoom camera onto their Galaxy lineup. Nokia responded by reinventing zoom with their Nokia Lumia 1020 and its 41 megapixel camera. Check out the following detailed video comparison between the Nokia Lumia 1020 and the Samsung Galaxy S4 zoom and see how they fair against each other.
source - 28Mobile (YouTube)