We were surprised (and delighted) when Sony decided to create the RX100 - its first compact camera for serious photographers, but that's nothing compared to our surprise when we were told about the RX1. This isn't just Sony's most serious compact camera, but arguably the most serious compact camera we've ever seen. It features a full-frame sensor and a fixed 35mm F2 lens, making it a real heavyweight in terms of lightweight photography. Sony has said it is targeting professional photographers and we see no reason to question that.
Sony RX1 Review
Sony RX1 Review
Sony Cyber-shot RX1 Camera Review
Sony Cyber-shot DSC-RX1 Review: Digital Photography Review
Sony Cyber-Shot DSC-RX1 Digital Camera {24.3MP} at KEH Camera
Sony Cyber-shot DSC-RX1 review: A pricey slice of heaven - CNET
Sony Cyber-shot DSC-RX1 - Wikipedia
Sony Cyber-shot DSC-RX1 review: A pricey slice of heaven - CNET
Sony CyberShot DSC-RX1R II Review