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EXIF data not preserved correctly


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I just downloaded paint.net v3.36 and did a little test to see if it would preserve EXIF data correctly. I editted an image and did a "Save As" to create a new image. I viewed the EXIF data using Irfanview and these are the results:

before editting:

  • Make - Canon
    Model - Canon PowerShot A650 IS
    Orientation - Top left
    XResolution - 180
    YResolution - 180
    ResolutionUnit - Inch
    DateTime - 2008:08:21 18:22:06
    YCbCrPositioning - Centered
    ExifOffset - 196
    ExposureTime - 1/60 seconds
    FNumber - 2.80
    ISOSpeedRatings - 80
    ExifVersion - 0220
    DateTimeOriginal - 2008:08:21 18:22:06
    DateTimeDigitized - 2008:08:21 18:22:06
    ComponentsConfiguration - YCbCr
    CompressedBitsPerPixel - 3 (bits/pixel)
    ShutterSpeedValue - 1/60 seconds
    ApertureValue - F 2.80
    ExposureBiasValue - -1.00
    MaxApertureValue - F 2.80
    MeteringMode - Multi-segment
    Flash - Flash not fired, compulsory flash mode
    FocalLength - 7.40 mm
    UserComment -
    FlashPixVersion - 0100
    ColorSpace - sRGB
    ExifImageWidth - 3000
    ExifImageHeight - 2250
    InteroperabilityOffset - 3362
    FocalPlaneXResolution - 13745.70
    FocalPlaneYResolution - 13698.63
    FocalPlaneResolutionUnit - Inch
    SensingMethod - One-chip color area sensor
    FileSource - DSC - Digital still camera
    CustomRendered - Normal process
    ExposureMode - Manual
    White Balance - Manual
    DigitalZoomRatio - 1.00 x
    SceneCaptureType - Standard
    Maker Note (Vendor): -
    Macro mode - Normal
    Self timer - Off
    Quality - Fine
    Flash mode - Not fired
    Sequence mode - Single or Timer
    Focus mode - Single
    Image size - Large
    Easy shooting mode - Manual
    Digital zoom - None
    Contrast - Normal
    Saturation - Normal
    Sharpness - Normal
    ISO Value - 80
    Metering mode - Evaluative
    Focus type - Auto
    AF point selected - Manual AF point selection
    Exposure mode - Program
    Focal length - 7400 - 44400 mm (1000 mm)
    Flash activity -
    Flash details -
    Focus mode 2 - Single
    White Balance - Tungsten
    Sequence number - 0
    Flash bias - 0 EV
    Subject Distance - 6553
    Image Type - IMG:PowerShot A650 IS JPEG
    Firmware Version - Firmware Version 1.00
    Image Number - 1001237
    Owner Name -
    Thumbnail: -
    Compression - 6 (JPG)
    XResolution - 180
    YResolution - 180
    ResolutionUnit - Inch
    JpegIFOffset - 5108
    JpegIFByteCount - 6164

after editting with paint.net and doing a save as:

  • Make - Canon
    Model - Canon PowerShot A650 IS
    Orientation - Top left
    XResolution - 180
    YResolution - 180
    ResolutionUnit - Inch
    Software - Paint.NET v3.36
    DateTime - 2008:08:21 18:22:06
    YCbCrPositioning - Centered
    ExifOffset - 308
    CustomRendered - Normal process
    ExposureMode - Manual
    White Balance - Manual
    DigitalZoomRatio - 1.00 x
    SceneCaptureType - Standard
    ExposureTime - 1/60 seconds
    FNumber - 2.80
    ISOSpeedRatings - 80
    ExifVersion - 0220
    DateTimeOriginal - 2008:08:21 18:22:06
    DateTimeDigitized - 2008:08:21 18:22:06
    ComponentsConfiguration - YCbCr
    CompressedBitsPerPixel - 3 (bits/pixel)
    ShutterSpeedValue - 1/60 seconds
    ApertureValue - F 2.80
    ExposureBiasValue - -1.00
    MaxApertureValue - F 2.80
    MeteringMode - Multi-segment
    Flash - Flash not fired, compulsory flash mode
    FocalLength - 7.40 mm
    UserComment -
    FlashPixVersion - 0100
    ColorSpace - sRGB
    ExifImageWidth - 3000
    ExifImageHeight - 2250
    FocalPlaneXResolution - 13745.70
    FocalPlaneYResolution - 13698.63
    FocalPlaneResolutionUnit - Inch
    SensingMethod - One-chip color area sensor
    FileSource - Other
    Maker Note (Vendor): -
    Macro mode - Macro
    Self timer - 16/10 sec
    Quality - Normal
    Flash mode - Not fired
    Sequence mode - Single or Timer
    Focus mode - Single
    Image size - Large
    Easy shooting mode - Full Auto
    Digital zoom - None
    Contrast - High , +4
    Saturation - High , +1
    Sharpness - Normal
    ISO Value - 80
    Metering mode - Center weighted averaging
    Focus type - Manual
    AF point selected -
    Exposure mode -
    Focal length - 0 - 3 mm (0 mm)
    Flash activity -
    Flash details -
    Focus mode 2 - Single
    White Balance - Auto
    Sequence number - 0
    Flash bias - 7.00 EV
    Subject Distance - 0
    Image Type - `½ú
    Firmware Version - IMG:PowerShot
    Image Number - 1001237
    Owner Name - 50 IS JPEGFirmware Versio
    Thumbnail: -
    Compression - 6 (JPG)
    XResolution - 180
    YResolution - 180
    ResolutionUnit - Inch
    JpegIFOffset - 3512
    JpegIFByteCount - 6164

As you can see, there are a few differences in the first part of the data (like Software - Paint.NET v3.36), but that doesn't bother me. It's the data starting with "Maker Note" and after that is all messed up and incorrect after editting with paint.net.

Does anybody else see this as a problem?

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  • 8 months later...

Hi,

Exactly the same happens here, using Paint.Net 3.36 (Win Vista SP1).

After saving, some of the existing EXIF-values will have changed to strange values, and one item has gone missing.

Example values (before save):

InteroperabilityOffset - 3362

FileSource - DSC - Digital still camera

Macro mode - Normal

Self timer - Off

Quality - Superfine

Easy shooting mode - Manual

Contrast - Normal

Sharpness - High , +1

Metering mode - Evaluative

Focus type - Auto

'Same' values (after save):

InteroperabilityOffset - (no longer present)

FileSource - Other

Macro mode - Macro

Self timer - 16/10 sec

Quality - Normal

Easy shooting mode - Full Auto

Contrast - High , +4

Sharpness - Normal

Metering mode - Center weighted averaging

Focus type - Manual

It so happens to be that my camera is also a Canon Powershot A650 IS, exactly the same as the previous poster. But this shouldn't really matter, should it??

The EXIF values were read from file & copied here using Irfanview 4.23.

I can send you the pictures if needed (original + modified).

Thanks,

Peter

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  • 4 weeks later...

For what it's worth, when you're ready to address a fix, this problem is not limited to photos originally taken with a digital camera. I am using a free tool called Exif Tool GUI (from http://freeweb.siol.net/hrastni3/) to update scanned positive slides, and I cannot update the camera model on any image I have editied with Paint.Net. I performed 3 experiments to confirm that Paint.Net "corrupts" EXIF data.

setup) Scan a slide as a TIF image.

1) Open the TIF file with Paint.Net. Save it as a JPG file. Select the JPG file with Exif Tool GUI. Highlight the EXIF button at the top right to limit the attribute set. Click the arrow underneath the EXIF button to display the change dialog. Edit the camera make and model. Uncheck the backup checkbox. Click the Save button. The reply is "1 files weren't updated due to errors".

2a) Open the TIF file with Microsoft Pro Photo Tools. Add a Name under the Photographer category. Save the file and close it. Select it with Exif Tool GUI. Highlight the EXIF button at the top right to limit the attribute set. Software="Microsoft Pro Photo Tools" and XPAuthor = my name. Click the arrow underneath the EXIF button to display the change dialog. Edit the camera make and model. Uncheck the backup checkbox. Click the Save button. The reply is "1 image files updated".

2b) Open the TIF file with Paint.Net. Save it as a JPG file. Select the JPG file with Exif Tool GUI. Highlight the EXIF button at the top right to limit the attribute set. Click the arrow underneath the EXIF button to display the change dialog. Edit the camera make and model again. Uncheck the backup checkbox. Click the Save button. The reply is "1 files weren't updated due to errors".

Please let me know when a fix is available, because I am archiving vacation photos which will eventually be burned to CD with creation date, photographer and GPS data.

Thanks!

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For what it's worth, when you're ready to address a fix, this problem is not limited to photos originally taken with a digital camera. I am using a free tool called Exif Tool GUI (from http://freeweb.siol.net/hrastni3/) to update scanned positive slides, and I cannot update the camera model on any image I have editied with Paint.Net. I performed 3 experiments to confirm that Paint.Net "corrupts" EXIF data.

setup) Scan a slide as a TIF image.

1) Open the TIF file with Paint.Net. Save it as a JPG file. Select the JPG file with Exif Tool GUI. Highlight the EXIF button at the top right to limit the attribute set. Click the arrow underneath the EXIF button to display the change dialog. Edit the camera make and model. Uncheck the backup checkbox. Click the Save button. The reply is "1 files weren't updated due to errors".

2a) Open the TIF file with Microsoft Pro Photo Tools. Add a Name under the Photographer category. Save the file and close it. Select it with Exif Tool GUI. Highlight the EXIF button at the top right to limit the attribute set. Software="Microsoft Pro Photo Tools" and XPAuthor = my name. Click the arrow underneath the EXIF button to display the change dialog. Edit the camera make and model. Uncheck the backup checkbox. Click the Save button. The reply is "1 image files updated".

2b) Open the TIF file with Paint.Net. Save it as a JPG file. Select the JPG file with Exif Tool GUI. Highlight the EXIF button at the top right to limit the attribute set. Click the arrow underneath the EXIF button to display the change dialog. Edit the camera make and model again. Uncheck the backup checkbox. Click the Save button. The reply is "1 files weren't updated due to errors".

Please let me know when a fix is available, because I am archiving vacation photos which will eventually be burned to CD with creation date, photographer and GPS data.

Thanks!

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  • 1 year later...

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