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From "Joakim Knudsen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IMAGING-49) ExifRewriter.updateExifMetadataLossless corrupts maker notes
Date Wed, 08 Nov 2017 21:34:00 GMT

    [ https://issues.apache.org/jira/browse/IMAGING-49?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16244758#comment-16244758
] 

Joakim Knudsen commented on IMAGING-49:
---------------------------------------

Sorry for replying to an old, resolved bug report, but is this fixed? I'm using the last stable
release of Sanselan (v 0.97), on Android, and am experiencing what seems to be the same problem:
Maker notes are corrupted by updateMetadataLossless.

Please see http://u88.n24.queensu.ca/exiftool/forum/index.php/topic,8642.0.html

I'm considering upgrading to Commons Imaging, which I hope to have fixed some of the bugs
in Sanselan, but this bug (reported in 2009) is listed as fixed/resolved in Sanselan...? 

> ExifRewriter.updateExifMetadataLossless corrupts maker notes
> ------------------------------------------------------------
>
>                 Key: IMAGING-49
>                 URL: https://issues.apache.org/jira/browse/IMAGING-49
>             Project: Commons Imaging
>          Issue Type: Bug
>         Environment: 0.97-incubator
>            Reporter: Lulu winlumski
>            Priority: Critical
>             Fix For: 1.0
>
>         Attachments: SanselanExifWriter.java, modified.jpg, original.jpg
>
>
> rewriter.updateExifMetadataLossless(jpeg, os, outputSet); 
> lead to loss of maker notes in the attached files.
> See attached files for details.
> $ exiftool -Makernotes:all original.jpg > original.txt
> $ exiftool -Makernotes:all modified.jpg > modified.txt
> $ diff -u original.txt modified.txt 
> --- original.txt	2009-10-21 02:14:11.000000000 +0200
> +++ modified.txt	2009-10-21 02:14:15.000000000 +0200
> @@ -1,66 +1,8 @@
> -Focal Type                      : Zoom
> -Focal Plane X Size              : 5.84 mm
> -Focal Plane Y Size              : 4.39 mm
> -Canon Image Type                : IMG:DIGITAL IXUS 60 JPEG
> -Canon Firmware Version          : Firmware Version 1.00
> +Canon Image Type                : 
> +Canon Firmware Version          : 
>  File Number                     : 100-0877
>  Owner Name                      : 
>  Canon Model ID                  : PowerShot SD600 / Digital IXUS 60 / IXY Digital 70
>  Thumbnail Image Valid Area      : 0 0 0 0
>  Date Stamp Mode                 : Off
> -My Color Mode                   : Off
>  Firmware Revision               : 1.00 rev 1.00
> -Macro Mode                      : Normal
> -Self Timer                      : Off
> -Quality                         : Superfine
> -Canon Flash Mode                : Red-eye reduction (Auto)
> -Continuous Drive                : Single
> -Focus Mode                      : Single
> -Record Mode                     : JPEG
> -Canon Image Size                : Large
> -Easy Mode                       : Full auto
> -Digital Zoom                    : None
> -Contrast                        : Normal
> -Saturation                      : Normal
> -Sharpness                       : 0
> -Camera ISO                      : Auto
> -Metering Mode                   : Evaluative
> -Focus Range                     : Auto
> -AF Point                        : Auto AF point selection
> -Canon Exposure Mode             : Easy
> -Lens Type                       : Unknown (-1)
> -Long Focal                      : 17.4 mm
> -Short Focal                     : 5.8 mm
> -Focal Units                     : 1000
> -Max Aperture                    : 2.8
> -Min Aperture                    : 5.6
> -Flash Bits                      : (none)
> -Focus Continuous                : Single
> -AE Setting                      : Normal AE
> -Zoom Source Width               : 2816
> -Zoom Target Width               : 2816
> -Spot Metering Mode              : Center
> -Manual Flash Output             : n/a
> -Auto ISO                        : 148
> -Base ISO                        : 100
> -Measured EV                     : 4.19
> -Target Aperture                 : 2.8
> -Target Exposure Time            : 1/60
> -Exposure Compensation           : 0
> -White Balance                   : Auto
> -Slow Shutter                    : Off
> -Shot Number In Continuous Burst : 0
> -Optical Zoom Code               : 0
> -Flash Guide Number              : 0
> -Flash Exposure Compensation     : 0
> -Auto Exposure Bracketing        : Off
> -AEB Bracket Value               : 0
> -Control Mode                    : Camera Local Control
> -Focus Distance Upper            : 2.56
> -Focus Distance Lower            : 0
> -Bulb Duration                   : 0
> -Camera Type                     : Compact
> -Auto Rotate                     : Rotate 90 CW
> -ND Filter                       : Off
> -Self Timer 2                    : 0
> -Flash Output                    : 0
> This makes the library utterly useless for me. You can just as well use MediaUtil which
has a smaller footprint and a (somewhat) cleaner API.    



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