でかせんさ
http://m43photo.blogspot.jp/2012/10/multi-aspect-sensor.html
http://1.bp.blogspot.com/-6lK4udFm5qk/UG30epDjDdI/AAAAAAAACw0/sCs60QaJ5SY/s1600/four%2Bthirds%2Bsensor%2Bsize%2Bgh1%2Bgh2%2Bgh3.png
http://3.bp.blogspot.com/-oBDHDlPBP7k/UG39gZe6GHI/AAAAAAAACxY/EiJ1gpdoaLw/s1600/four%2Bthirds%2Bsensor%2Bsize%2Bgh1%2Bgh2%2Bgh3%2Bdiagonal.png
http://www.43rumors.com/wp-content/uploads/2010/09/new_pana_sensor.png