Imported files missing capture date.

Fred Tedsen

• 2020年09月15日 05:17

After importing my Lightroom library to Capture One, I discovered that a substantial number of files are missing the capture date (I am assuming that capture date is the actual EXIF field).  I have verified that the date is actually in the files, Lightroom shows them as do EXIF display utilities.  Does anyone know how to fix this?

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  Permanently deleted user

  • 2020年09月15日 08:45

  Hi Fred,

  All the images that I imported a few years ago from Lightroom kept their capture date, except those taken before 1970. This is related, as told by C1 staff, to the Unix time.

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  SFA

  • 2020年09月15日 11:12

  Fred,

  Are the problem files original digital images from a digital device or scans from another source type?

  Are the dates you have for them help in the EXIF data or another date and time field, perhaps in the IPTC data?

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  Fred Tedsen

  • 2020年09月15日 12:41

  Most of the images with missing dates are files that my daughter has sent with WhatsApp.  They don't have a lot of metadata.  Lightroom reports the dates in the same field as all the other images, but there must be some difference that I don't see.  These aren't images that I need Capture One to work on, so I'll probably just throw them in to Mac Photos and get them out of my way.  Thanks.

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  Permanently deleted user

  • 2020年09月15日 19:15
  • 編集済み

  There are several metadata fields that can be used as a capture date.  It is possible that WhatsApp uses a field that Capture One ignores. Use something like ExifTool to dump metadata to see what WhatsApp uses.   Then you can submit a request to Capture One to support that field.   Good luck with that.

  Also be aware:  Capture One ignores dates earlier that Jan 1 1970.  I've reported that as a bug.  I do not have any good feelings about Capture One fixing that bug any time soon.

  Edit: Oops I hadn't seen Robert's comment about "UNIX time" before I wrote my "be aware" comment.   Support saying "it is related to UNIX time" is accurate, but a poor excuse.  UNIX time is kept as number of seconds since Jan 1 1970.   Capture One developers apparently do not account for negative numbers.   Negative numbers indicate times before Jan 1 1970.  This should be a trivial thing to fix.   The fact t hasn't been fixed yet indicates either Capture One doesn't care enough to make fixing it a priority or their software does something special with times that makes it more complex than handling negative numbers and thus not worth the manpower.

  Converting a unix timestamp to a printable date is typically one line of code in most computer languages as the hard work is provided by OS code libraries.

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  Steven Martin

  • 2020年10月09日 09:47
  • 編集済み

  I was about to post the same issue after just having gone to the trouble of putting dates to tens of thousands (yes, really) of negative and slide scans before importing them.

  Thank you Robert Farhi and Marco Hyman for clarifying that this is a known bug.

  I would like to add my plea to Capture One to help us solve this! I am (finally) migrating from Aperture and this may make me decide to choose another solution as it is a big deal for me if I cannot scroll through my images in chronological order. 

  Where/How do I report this as a bug as well, just to add to the existing requests?

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