Exynos 5 Octa includes an internal Image Signal Processor (ISP) which can process a single 13 MP 30 fps, or 24 MP 16 fps Bayer image stream. It supports zero shutter lag at 30 fps performance domain in addition to multiple image enhancement features with low power consumption. Additionally, it also includes add-on hardwired post-processing units, which enhance the image quality. Exynos 5420 ISP also offers optimized hardware for implementation of computational photography applications with powerful CPU and GPU. This paper discusses multiple key advantages and competitiveness of Exynos 5420 ISP over other ISPs in terms of performance, advanced features and low power consumption.