MakerNotes decisions

[user2014]

Hello,

in ExifIFD is the tag 0x927c - the offset to the MakerNotes.
But how do you decide if these are Canon MakerNotes or Nikon or Panasonic or ...
Is the decision based on some other tag?

And inside e.g. Canon MakerNotes how do you decide which CanonCameraInfoXXXX to use ? Maybe based on tag CanonModelID ?

Thank you
Bye
Erwin

[Phil Harvey]

Hi Erwin,

See the Condition statements here.

- Phil

[user2014]

Hi Phil,
thanks for the link - well ....

I have pictures from a lot of different cameras.
In my little application I'd like to show all VALID tags of a picture.
Not only the tags with values - also tags which are not used / have no values (if writable with a Text box).
So there are a lot of  tags (e.g. in the MakerNotes, ... ) depending on the camera.
I thought there is an easy way to find all the corresponding valid tags for a picture / camera (from -listx).

Is there another way ?
Maybe a command line option getting all valid tags used and unused from a given picture / camera ?

Thanks
Erwin

[Phil Harvey]

Hi Erwin,

ExifTool will extract all known tags for a picture with the -a option.  You can add -u to also extract unknown tags from some formats, or -U to extract some unknown tags from binary data.

There is no way to provide a list of all valid tags for a given camera.  I do not think it would be possible to do this without a LOT of testing with each camera.

- Phil

[greybeard]

I was waiting to see your response Phil.

Having spent a lot of time looking at the output of Fuji cameras each model has a different set of possible tags within the FUJIFILM maker notes.

And these can change with a firmware release.