ExifTool Forum

General => Metadata => Topic started by: dimitri_c on July 29, 2013, 02:01:45 AM

Title: • Error reading value for MakerNotes entry 2
Post by: dimitri_c on July 29, 2013, 02:01:45 AM
Hello -

I used Exiftool since a while now, I never had problem with it.
I always use the same command line: "exiftool -artist="Dimitri XXXXXXX" -copyright="Dimitri XXXXXXX" /Volumes/Works/iPhotoLibrary/Originals/2013/28\ Jul\ 2013/L1000XXX.DNG"
But, recently I bought a new camera and since I try to use Exiftool, I always get the following error message:

"Warning [minor]  Possibly incorrect maker notes offsets (fix by -114?) - /Volumes/Works/iPhotoLibrary/Originals/2013/xx Jul 2013/L1000XXX.DNG
Error [ minor]  Error reading value for MakerNotes entry 2 - /Volumes/Works/iPhotoLibrary/Originals/2013/xx Jul 2013/L1000XXX.DNG
   0 image files updated
   1 files weren't updated due to errors
"

And of course it doesn't update the metadata in my pictures…

Is there a way to fix this problem?
Or at least a way to avoid the problem, and let Exiftool update some metadata in my pictures?


Thank you, very much, have a nice day…




- Dimitri
Title: Re: • Error reading value for MakerNotes entry 2
Post by: Phil Harvey on July 29, 2013, 06:58:08 AM
Hi Dimitri,

Are these DNG images straight from the camera?  If so, what type of camera?  If not, what software was used to write these?

FAQ number 15 (http://owl.phy.queensu.ca/~phil/exiftool/faq.html#Q15) explains these problem in the context of JPEG images, but I don't recall ever having seen this for DNG images.

- Phil
Title: Re: • Error reading value for MakerNotes entry 2
Post by: dimitri_c on July 29, 2013, 07:12:30 AM
Hello Phil -


First of all, thank you so much to have programmed "ExifTool", I like it a lot!
Secondly, if it works with my new camera, I'll make a donation (PayPal®)


Now concerning your questions…

 •  The camera is a new Leica® "M" (Typ240)
 •  The camera save the file as .DNG compressed (that was already the case with my old "M9").
 •  YES, the .DNG are straight from the camera.
 •  I only write some copyright information and some keywords with the MAC Terminal (OS 10.6.8).
 •  I have downloaded and installed the latest MAC version yesterday, but the problem is still there (and I'm so sad, because the only alternative I found is to install Adobe® Lightroom®, but I would like to avoid this "solution").



Thank you for your reply, have a nice day…






- Dimitri
Title: Re: • Error reading value for MakerNotes entry 2
Post by: Phil Harvey on July 29, 2013, 07:31:32 AM
Hi Dimitri,

Ah, right.  The wonderful world of the Leica M.  The maker notes written by this camera are particularly buggy (http://owl.phy.queensu.ca/~phil/exiftool/idiosyncracies.html#Leica).  I forgot that ExifTool also gave a "possibly incorrect offsets" warning for this camera.  There are lots of other problems too.  Use the -m option without the -F option for these DNG's.  And check to be sure the Leica software doesn't have a problem reading these images afterwards.  Also, I would suggest avoiding Adobe utilities because they will make a bigger mess if you use them to touch the Leica M DNG's.  (Although maybe after editing with ExifTool they would be OK.)

Code: [Select]
> exiftool LeicaM.dng -a -warning
Warning                         : [minor] Empty ApplicationNotes data
Warning                         : [minor] Possibly incorrect maker notes offsets (fix by -114?)
Warning                         : [minor] Error reading value for MakerNotes entry 2

- Phil