Public bug reported:

exiftran should not be changing any exif data except the orientation tag
and /or thumbnail, and probably image height / width. However the output
file's exif data is being changed in unexpected ways, being filled with
corrupt values.

Here is a diff of the before and after of the exif values of this file after 
the command exivtran -i -9 on this file:
https://dl.dropbox.com/u/352146/exif_test/P1070321.JPG

10c10
< Exif.Image.ExifTag                           Long        1  418
---
> Exif.Image.ExifTag                           Long        1  634
14a15
> Exif.Photo.SensitivityType                   Short       1  1
27c28
< Exif.MakerNote.Offset                        Long        1  920
---
> Exif.MakerNote.Offset                        Long        1  1148
40c41
< Exif.Panasonic.InternalSerialNumber          Undefined  16  57 58 57 57 32 48 
48 58 48 48 58 48 48 0 0 0
---
> Exif.Panasonic.InternalSerialNumber          Undefined  16  88 49 52 49 49 48 
> 54 48 49 48 48 53 55 0 0 0
51c52
< Exif.Panasonic.BabyAge                       Ascii      20 
---
> Exif.Panasonic.BabyAge                       Ascii      20  9999:99:99 
> 00:00:00
63,65c64,66
< Exif.Panasonic.LensType                      Ascii      34  :99:99 00:00:00
< Exif.Panasonic.LensSerialNumber              Ascii      14 
< Exif.Panasonic.AccessoryType                 Ascii      34 
---
> Exif.Panasonic.LensType                      Ascii      34  OLYMPUS M.45mm 
> F1.8
> Exif.Panasonic.LensSerialNumber              Ascii      14  ABM234742
> Exif.Panasonic.AccessoryType                 Ascii      34  NO-ACCESSORY
71c72
< Exif.Panasonic.BabyAge                       Ascii      20
---
> Exif.Panasonic.BabyAge                       Ascii      20  9999:99:99 
> 00:00:00
74,76c75,77
< Exif.Photo.PixelXDimension                   Long        1  3448
< Exif.Photo.PixelYDimension                   Long        1  4592
< Exif.Photo.InteroperabilityTag               Long        1  8840
---
> Exif.Photo.PixelXDimension                   Long        1  4592
> Exif.Photo.PixelYDimension                   Long        1  3448
> Exif.Photo.InteroperabilityTag               Long        1  9068
98,99c99,100
< Exif.Thumbnail.JPEGInterchangeFormat         Long        1  8988
< Exif.Thumbnail.JPEGInterchangeFormatLength   Long        1  6455
---
> Exif.Thumbnail.JPEGInterchangeFormat         Long        1  9716
> Exif.Thumbnail.JPEGInterchangeFormatLength   Long        1  6345

The proper values are those with the correct lens information.

Version is 2.07-10build1 on up-to-date raring.

** Affects: fbi (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1127405

Title:
  exiftran writes bad EXIF data

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