Hi There!
I have been using the 'InternalSerialNumber' to uniquely identify cameras in our inventory. This works fine but doesn't actually line up with the serial number on the camera. I was curious if the 'InternalSerialNumber' should be expected to map to the serial number found on the bottom of the camera or not? I have read through the code and learned about the cipher and the 6 bytes of unsigned ints read from that sub tag that ExifTool parses. I know this seems a bit pedantic but we have a mixture of a7R3s and a7R4s and the R4 can write the serial to metadata now and I wanted to keep them consistent so when someone looks at our DB of serials and metadata from images that they actually match.
Again, if this is futile... just tell me :)
The tag is named InternalSerialNumber because it wasn't matching up with the one on the outside of the camera.
- Phil