Flew a job yesterday - checked to see I had all the photos I needed before leaving job. Just looked at the small pics and did not enlarge each one full screen. Had all the shots I wanted and left, but when I looked at each pic full screen all of them were grainy. Worked on bird and tried different settings until it got dark and all the pics I took came up grainy. Did different settings and even changed out lenses. IMU-Compass and gimbal all calibrated - Firmware up to date. Any ideas?