That rubbish, over-exposed tulip to the left there is photographed using a standard backside illuminated image sensor. The lovely one to the right has been captured using Samsung's new ISOCELL tech for greater light sensitivity. The next-gen phone battle's all about low-light sensitivity, seeing as everything's quad-core and immense now.
Samsung had this to say about how the ISOCELL operates: "This new technology substantially increases light sensitivity and effectively controls the absorption of electrons, resulting in higher color fidelity even in poor lighting conditions. ISOCELL improves the image quality and enhances the user experience of premium smartphones and tablets that integrate sensors with this exciting new technology."
Given that Samsung always has one very, very important "premium smartphone" prepared for release around April or May each year, this ISOCELL tech is surely a banker for inclusion in next year's inevitable Galaxy S5. [Samsung]