Slot number in NEFs

[afx]

Hi,
while trying to figure out some image corruption issue, I did compare image files between the two SD cards that where written in backup config from my D750.
Turns out, all of them differ at the same offset in the fileinfo tag.
It seems to be the card number (0 or 1) preceding the folder number.
If needed I can make a set of NEFs available.

cheers
afx

[Phil Harvey]

Very interesting.  Send me a pair of NEF's and I'll see if I can extract this information.   My email is philharvey66 at gmail.com

Thanks.

[Phil Harvey]

I got the images, thanks.  ExifTool 10.12 will extract this information as MemoryCardNumber.

- Phil