Sony Cyber Shot Dsc Rx100 IV: A Guide for Beginners The new Sony Cyber-shot DSC-RX100 IV camera is the latest in Sony’s compact digital releases. It has been referred to as the enhanced model to the RX100 III. As with this earlier RX100 III model and others, the RX100 IV boasts critical acclaim and epitomizes Sony’s quest at innovation. The DSC-RX100 IV, though similar to other models in the line, also boasts enhanced features and has received rave reviews since its release to the public. Like the earlier models, it is outfitted with a twenty-four- seventy millimeter equivalent lens (F1.8-2.8), the 2.36metre OLED pop-up electronic viewfinder and the three inch display.