Cameras with longer battery life can take more photos before exhausting their batteries.
Shooting with a wide prime helps you see new shots; Good performance and fast autofocus; Excellent sharp, bright lens; Very customizable; In-camera Wi-Fi works with more than just Android and iOS; Supports Pentax wireless flash strobes
Fixed, wide prime lens isn't for everyone; Cramped controls; Burst capture is slower for JPEGs; Tends too warm under incandescent lighting; Wi-Fi app is poor, and web browser control has cluttered interface
Comfortable ergonomics and solid build; Versatile EVF and tilt-swivel, touch-screen LCD; Good image quality; Great performance for its class; New C-RAW format saves on raw file size; 4K video is an M-series first.
Somewhat limited dynamic range; JPEGs a little soft at base ISO, and more so at higher ISOs; Warm white balance under incandescent light; Poor battery life; Raw buffer is still shallow (but C-RAW helps).