http://www.eoshd.com/wp-content/uploads/2014/05/gh4-recording-areas-660x499.jpg
http://www.eoshd.com/wp-content/uploads/2014/05/gh4-recording-areas-660x499.jpg
http://www.sony.net/Products/SC-HP/index.html
IMX220 5248(H) × 3936(V) approx. 20.65M pixels
http://www.sony.net/Products/SC-HP/IS/sensor1/img/products/ProductBrief_IMX220_20140910.pdf
IMX230
http://www.sony.net/Products/SC-HP/IS/sensor1/img/products/ProductBrief_IMX230_20150427.pdf
18M(4,896×3,672)