Superb build quality; Amazing EVF; Great image quality from RAW files; Good high ISO performance; Very good dynamic range; Very low shutter lag; Fast AF on stationary objects; Class-leading ~11 fps burst mode; 4K DCI and UHD video; Full HD up to 120p. Built-in Wi-Fi and GPS; Dual card slots; Decent battery life for its class.
Big for a full-frame mirrorless camera; Very slow buffer clearing; Contrast-detect AF system struggles with moving subjects; In-camera JPEGs are muted and dull; Very limited native lens selection (but supports many other Leica lenses via adapters); Expensive.
Fantastic image quality across the board; Excellent RAW dynamic range; Superb high ISO performance; Functional and user-friendly body; Robust weather-sealed construction; Detachable EVF; Tilting touchscreen; Very good lens quality.
Slow AF speeds; Performance can't compete with high-end full-frame cameras; Limited native lens selection so far; Expensive accessories; Unimpressive JPEG dynamic range; 1/125s maximum flash sync.