STORE CAPTIONS IN THE CAMERA:
This an already made exemple you can download: NikonCaptionExemple (just unzip it and copy it on a CF card)
Prepare a caption in AFP-Reporter / Caption
On your Laptop
The caption file has to be named this way: NCIPTC0x.NMS (x = figure from 1 to 9)
Copy this file onto an XQD.
On this XQD create 2 folders called NIKON and IPTC
Move NCIPTC0x.NMS into IPTC, then move IPTC into NIKON (It means your file is now located in .\NIKON\IPTC\NCIPTC01.NMS )
Insert this XQD into the camera
On your camera
Go to Setup menu/IPTC/Copy to camera/ choose destination. This saves the caption into the camera
In Setup menu/IPTC/ select Auto Embed during shooting OFF/ choose the caption. This will insert the caption in the Pictures.
You can store up to 10 different captions in the camera.