Distortion control data upgradeAnswer ID 17162|Published 02/17/2011 09:51 AM|Updated 05/20/2013 04:26 PMQuestion: What is the “Distortion control data” upgrade, and how do I get it?The Distortion Control Data firmware upgrade is available for Nikon D4, D800E, D90, D7000, D5100, D5000, D3200, and D3100 cameras. This…