Sigma's normal-lens Foveon compact — the dp2 Quattro, fixed normal prime, X3 Quattro sensor, APS-C, 2014.
The Sigma dp2 Quattro is a fixed-lens digital compact announced in 2014, part of Sigma's dp Quattro series and built around the Foveon X3 Quattro sensor. It was the first of the Quattro compacts to reach the market and introduced the line's distinctive elongated body, carrying a normal-perspective fixed lens.
It is a fixed-lens compact with no interchangeable mount and no reflex mirror, so it has no lens mount and takes no removable lenses. Its APS-C-class Foveon X3 Quattro sensor uses three stacked layers with a revised resolution split, capturing colour at each location rather than interpolating it, matched to a fixed normal-angle prime. The body has no in-body stabilisation and no meaningful video, composes on the rear screen, records raw for Sigma Photo Pro, and takes SD-type media.
The dp2 Quattro is valued for the distinct Foveon output at a normal focal length, suited to portrait, street and general photography at low ISO. Its elongated form places the grip forward and handles unlike a conventional compact, and like other Foveon models it is deliberate to shoot with limited high-ISO latitude, rewarding a considered method.
When buying used, expect slow operation and rapid battery drain typical of Foveon compacts, so test power and carry several spare batteries. Check the fixed lens and sensor area for dust or marks, inspect the rear screen for dead or stuck pixels, and confirm the card and battery doors latch. Raw processing depends on Sigma Photo Pro, and service support is limited, so buy a tested example and plan the workflow around it.