Lightroom: incorrectly sets Capture Time

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  • Problem
  • Updated 7 years ago
  • (Edited)
Windows Vista, LR 3.5

I see my photo has two properties in the Windows Vista explorer
"Date Taken"
and
"Date Modified"

When LR 3 imports the photos, it sets "Capture Time" to the value of "Date Modified" this is incorrect, the capture time should equal the date the picture was taken!

If I change the 'Capture Time" inside of LR and then write the metadata to the file, LR writes the value of 'Capture Time' to the file's "Date Taken" property in the file.

Recap:
a) LR uses the jpeg file's "Date Modified" to write to "Capture Time" in LR during import
b) LR takes the value of "Capture Time" to write to "Date Taken" inside the file on disk when writing metadata to disk.
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Dennis Shumaker

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Posted 7 years ago

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Rob Cole

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Are you importing from a card? How far apart are Date Modified and Capture Time?

(Speculation: Adobe may have done this to circumvent difficulties with squirrelly exif metadata being sometimes UTC instead of local...)
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Dennis Shumaker

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Thanks for the reply Rob !

No, from disk.

I used a third party tool to change the date time to 10.5 hours earlier. The time difference between central US time and Bangalore, India.

Tool:
EXIF Date Changer, v2.5.2.0
support@relliksoftware.com
http://www.relliksoftware.com/

So in most pictures cases, the date modified is 10.5 hours later than date taken.
In some cases date modified were 1-3 years later than date taken. That should be okay, pictures can be tweaked and the date taken should never change.

If I look in a metadata viewer before import of the pictures in question, there is no UTC text after the date timestamp. It simply says "8/26/2005 9:44 AM"
Camera is Koadak V550 bought in the USA. Date modified simply says "8/26/2005 8:14 PM" You can see the 10.5 hours difference. I opened a question on that too! timezone feature should be more than just hourly time differences.

So then I imported into light room and LR uses date modified for capture time.
So now they are wrong in LR. And if I wrote metadata back to disk, it would be wrong on disk. And in some cases very wrong, those with older date modifies.

Windows Vista Explorer that shows date taken should always be used for capture time in LR. 'date taken == capture time'

The 10.5 hours is my easy example. IN one set of Russian pics, the date taken time was off 1639 days 18 hours, and 8 minutes. Camera time was not set after battery change. Several hundreds of these.
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Rob Cole

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I really don't know why Lightroom behaves as it does in this regard, but I get your point. Maybe somebody from Adobe or one of their "agents" will chime in.

In the mean time, perhaps a "touch" utility to set date-time modified to same as date taken (it doesn't look like the Date Changer has option to synchronize date-modified with capture-time(?)).

Sorry I can't be more help...
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John R. Ellis, Champion

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Any number of things could be going wrong with the photos' metadata, and it may or may not be LR's issue. Most tools and many cameras, including Windows, generally aren't that fastidious about following industry standards, which are evolving and sometimes ambiguous.

Suggestion: Post the original photo here (with the Add Image button at the bottom of the reply box), or upload it to pixentral.com (free) and post the URL here.
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Dennis Shumaker

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Hi John

file is a bit bigger than 3MB

I uploaded to pixentral
http://www.pixentral.com/show.php?pic...

thanks
Dennis
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Dennis Shumaker

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Here' a different pic that is smaller than 2MB
same problem
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Dennis Shumaker

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Here is a jpg which shows what Im talking about
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John R. Ellis, Champion

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I can't replicate the symptoms you're seeing.

For 100_0026.jpg, my Windows 7 Explorer shows the following:

Date taken: 8/26/2005 8:46 PM
Date modified: 10/12/2011 10:21 PM

Exiftool, the most reliable metadata tool available, shows the following fields:

[EXIF] Date/Time Original : 2005:08:26 20:46:07
[XMP] Date/Time Digitized : 2005:08:26 10:16:07+05:30
[XMP] Date/Time Original : 2005:08:26 20:46:07+05:30

The DateTimeOriginal fields match what Windows 7 Explorer is showing.

When I import that photo into my LR 3.5, it shows Capture Time as

8:46:07 PM, August 26, 2005

which correctly matches the EXIF: and XMP:DateTimeOriginal fields in the metadata, not the file Date Modified. (LR always ignores any time zones.)

I'm wondering whether the issue is Windows Vista -- it could be incorrectly showing DateTimeDigitized as Date Taken in Windows Explorer.

In recent years, Microsoft has taken photo metadata seriously, but I know that in years past there were a number of bugs. I believe that if you install the latest version of Windows Live Photo Gallery (the one you download, not the one built-in to Vista), you'll get the latest Windows libraries for handling image metadata (these are the libraries that Explorer invokes to show metadata fields). And then perhaps Windows Vista Explorer might show different values?
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Dennis Shumaker

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thank you for trying John !

I'll look into the things you mentioned, it looks like its worth a shot!

cheers

dennis