Sony Cyber-shot DSC-RX1

The Sony Cyber-shot DSC-RX1 is a premium fixed-lens compact camera made by Sony as part of its Cyber-shot line of digital cameras. The DSC-RX1 is notable for being the world's first fixed-lens, full-frame digital compact camera, and as of its announcement, it is the world's smallest full-frame digital camera but is also considerably more expensive than most other compact cameras. It was announced on September 12, 2012.
Notable features.
The DSC-RX1 features a 35 mm f/2 Zeiss Sonnar lens with leaf shutter capable of a minimum shutter speed of 1/2000 s (for apertures 2.0 to 4.0), 1/3200 s (for apertures down to 5.6), and even 1/4000 s (for smaller apertures down to 22). The camera is equipped with a 24.3-megapixel full-frame CMOS sensor, and it includes a new Multi Interface Shoe that is physically compatible with the ISO 518 standard hot shoe, with electrical contacts for newer Sony shoe-mounted accessories as well as compatibility with the proprietary iISO flash shoe via the ADP-MAA adapter.
DxO Mark.
Based on DxOMark Sensor Scores (performance), the Sony DSC-RX1 got the best overall score among high-end compact cameras and mirror-less cameras tested with 93 scored, and even the Sony DSC-RX1's overall score is just behind the full-frame DSLR of Nikon D800, Nikon D800E and Nikon D600, with 96 and 94 respectively.
DSC-RX1R variant.
The Sony Cyber-shot DSC-RX1R, released in 2013, is a variant of the Sony DSC-RX1 without anti-aliasing filter in front of the image sensor. This can slightly increase the effective resolution at the expense of possibly more moiré in areas with fine repeating textures.
In 2015, both models were succeeded by the Sony Cyber-shot DSC-RX1R II.