From Nikon:
Nikon D600 Firmware v.1.04
Changes from “C” Firmware Version 1.03 to 1.04
- The SETUP MENU > Time zone and date > Time zone display now shows only the names of major cities in the currently selected zone.
- Fixed an issue that resulted in over-application of distortion control in pictures taken with an AF-P DX NIKKOR 10-20mm f/4.5-5.6G VR lens at a focal length of 10 mm and with FX (36x24) 1.0x selected for Image area > Choose image area, Off selected for Image area > Auto DX crop, and On selected for Auto distortion control in the SHOOTING MENU.
Download: Nikon D600 Firmware v.1.04
Nikon D610 Firmware v.1.04
Changes from “C” Firmware Version 1.03 to 1.04
- Fixed an issue that resulted in over-application of distortion control in pictures taken with an AF-P DX NIKKOR 10-20mm f/4.5-5.6G VR lens at a focal length of 10 mm and with FX (36x24) 1.0x selected for Image area > Choose image area, Off selected for Image area > Auto DX crop, and On selected for Auto distortion control in the SHOOTING MENU.
Download: Nikon D610 Firmware v.1.04
Nikon D750 Firmware v.1.15
Changes from “C” Firmware Version 1.13 to 1.15
- Fixed an issue that resulted in over-application of distortion control in pictures taken with an AF-P DX NIKKOR 10-20mm f/4.5-5.6G VR lens at a focal length of 10 mm and with FX (36x24) 1.0x selected for Image area > Choose image area, Off selected for Image area > Auto DX crop, and On selected for Auto distortion control in the PHOTO SHOOTING MENU.
- Fixed an issue that resulted in photos shot with non-CPU lenses being overexposed when taken by pressing the shutter-release button all the way down in a single motion under the following conditions: the standby timer off, On selected for Custom Setting c1 (Shutter-release button AE-L) in the CUSTOM SETTING MENU, and lens information specified using the Non-CPU lens data option in the SETUP MENU.
Download: Nikon D750 Firmware v.1.15