• Active Pixel Array: ♦ 16K = 4096 × 4096 Active Pixels ♦ 12K = 4096 × 3072 Active Pixels • Optical Format: ♦ 16K = APS−C Optical Format ♦ 12K = 4/3 inch Optical Format • 4.5 mm × 4.5 mm Square .