Panasonic DMC-GH4 Mirrorless Micro Four Thirds Camera + Sigma 18-35mm f/1.8 DC HSM Art Lens & Metabones MB_SPEF-M43-BT3 Adapter with 16PC Accessory Bundle 16.05 MP Digital Live MOS Sensor; DCI 4K 4096x2160 at 24p; UHD 4K 3840x2160 at 30p/24p Full HD up to 60p; 3.0" 1,036k-Dot OLED Touchscreen Monitor; 2,359K-Dot OLED Live View Finder Support for 59.94p, 23.98p, 50p, & 24p; 4:2:2 8-Bit or 10-Bit HDMI Output; High-Speed 49-Point Autofocus Lens: Aperture Range: f/1.8-16; Fast Constant Maximum Aperture; Designed for APS-C-Sized Sensors; 35mm Equivalent Focal Length: 28.8-56mm Adapter: 0.64x Micro 4/3 Crop Factor Compensation; 1.3-Stop Increase in Lens Apertures; 6 Optical Elements in 4 Groups; Locking Mechanism to Secure Lens