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Question

P: Problems with "Do not import possible duplicates" for Fuji X-T5 images

Forum|Forum|1 month ago
March 21, 2026
8 replies
485 views

Short description:
When importing RAW and/or JPG files from my Fuji X-T5 into LrC, despite selecting the "Do not import possible duplicates" function, no duplicates are recognised and all images that have already been imported are imported into LrC again. A “-2” is appended to the file names.
Duplicates of my RAW files from my Canon R5 II are recognised as such and are not imported. All settings are the same in both cases.
LrC 15.2, macOS Tahoe 26.3, iMac with M3

LrC 15.2, macOS Sequoia 15.7.4, MacStudio with M4 Max

LrC 15.2 Windows 11 lasted Version

Long Description:

The problem I described above, whereby RAW files from the Fuji X-T5 are not recognised as duplicates during import and are therefore not imported, is a little more complicated than it seems.
One type of import works, but the other does not.

It works when I import the images as follows:
1. Connect the camera directly to the iMac -> import > all images that have not yet been imported are offered for import. Images that were imported in a previous session are not displayed for import, as they are correctly recognised as duplicates. This is therefore the correct procedure.

2. The same applies if I plug a card reader into the iMac instead of the camera and insert the SD card removed from the camera. Everything works as described in point 1.

It does not work when I Connect the camera or card reader with the SD card to an iPad running iPadOS 26 and import the images into Lightroom on the iPad. Once the images have been imported into Creative Cloud, they will also appear on the iMac after a certain amount of time. If I now connect the camera or card reader with the SD card to the iMac as described in steps one or two, the import process will start. Images that were synchronised via the iPad in the first step and are now also on the SD card are not recognised as duplicates! As I wrote in my first message, the file is then additionally imported from the SD card and correctly appended with “-2” to the file name.

To further investigate the source of the error, I compared the duplicate files on a binary basis. They are exactly the same! So the files are not changed during import/synchronisation via Creative Cloud, but are somehow incorrectly "sorted" when synchronising the images from the cloud to my Desktop PCs.

To rule out problems with the iPad, I have further tested:

This time using LR 9.2 on a Windows 11 PC to upload to Creative Cloud and a Mac Studio MacOS 15.7.4 for direct Import.

It works when I import the images as follows:
1. Connect the camera directly to the Mac Studio -> import > all images that have not yet been imported are offered for import. Images that were imported in a previous session are not displayed for import, as they are correctly recognised as duplicates. This is therefore the correct procedure. Even if I rename the RAW during Import.

2. The same applies if I plug a card reader into the Mac Studio instead of the camera and insert the SD card removed from the camera. Everything works as described in point 1.

It does not work when I connect the camera or card reader with the SD card to copy the RAW Files to the Windows 11 PC using LR 9.2 to upload the RAW to the Creative Cloud. Once the images have been imported into Creative Cloud, they will also appear on the iMac after a certain amount of time. If I now connect the camera or card reader with the SD card to Mac Studio, the import process will start. Images that were synchronised via the windows PC and also present on the SD card are not recognised as duplicates!

The files are also binary identical when using this method via am iPad.

The problem only affects my X-T5 files, not my Canon R5 II files!

The problem seems to lie with importing/synchronising via Creative Cloud.

Best regards,

Ulrich

Rikk Flohr_Photography

A note from engineering regarding this thread:

“Fuji files don't have millisecond info in the capture time. So, unless the files have the same name and same capture date/time, LrC will not detect them as duplicates.”

Rikk Flohr: Adobe Photography Org

U

UliPAuthor

Known Participant

As I wrote before, the files have identical names and are binary identical!

So the problem occures during the import via cloud and direct import.

John R. Ellis was able to er-enact this too! Please pass it on to the developers again!

Sameer K

Community Manager

Thanks for the detailed report. I've shared this with the team for review.

Best,
Sameer K

U

UliPAuthor

Known Participant

Thank you for your support!

Unfortunately, the problem now also occurs with my Canon R5 Mark II RAW files! (LrC 15.2):

File imported via Cloud:

R52_3790.CR3 => dateTimeOriginalISO8601 2026-03-31T14:23:12.250+01:00

File imported directly to Mac:

R52_3790-2.CR3 => dateTimeOriginalISO8601 2026-03-31T14:23:12.25+01:00

johnrellis

Legend

Sure suggests that the two code paths have differing rules about trailing zeroes in the string representation of capture time.

johnrellis

Legend

Import does not always detect duplicates correctly if one of the photos has already been synced from LR Cloud.

To reproduce with Lightroom Classic 15.2.1 / Lightroom Desktop 9.2 / Mac OS 26.2:

1. Save the two attached raws to a folder on your desktop.

2. Import the two photos into Lightroom Desktop. Wait for them to sync down into Lightroom Classic.

3. In Lightroom Classic, do File > Import and navigate to the folder from step 1. Select the option Don’t Import Suspected Duplicates. Observe that Import thinks DSC04332.ARW is a duplicate (correct) and DSCF0184.RAF is not (incorrect):

Click Import to complete the import.

4. Using the SDK, e.g. using the Debug Script command of the free Debugging Toolkit, observe that the metadata field “dateTimeOriginalISO8601” of the photo synced from LR Cloud contains fractional seconds “.000”, while that field of the photo imported directly from the folder does not:

This hints at an internal inconsistency in how LR is representing capture time.

johnrellis

Legend

@Sameer K, here are the two photo attachments that were lost by the Gainsight forum platform when my bug recipe was merged here.

DSCF0184.RAF

DSC04332.ARW

johnrellis

Legend

[View this post in your web browser. It contains formatting and images that don't appear in email.]

What about this question? In LR Classic’s Import window, are you selecting the Devices or the Files section of the Source panel?

U

UliPAuthor

Known Participant

Hi John,

to clarify, I've drawn a quick diagram:

johnrellis

Legend

That detail is helpful.

In steps 3 and 7, are you selecting the Devices or the Files section of the Source panel?

johnrellis

Legend

[View this post in your web browser. It contains formatting and images that don't appear in email.]

it really doesn’t matter whether I import the images via the camera – PC USB port or via an SD card in a card reader connected to the PC. They are generally not recognised as duplicates.

Hmm, that seems to contradict what you wrote in your first post?

2. The same applies if I plug a card reader into the Mac Studio instead of the camera and insert the SD card removed from the camera. Everything works as described in point 1.

I don’t think I’m understanding.

johnrellis

Legend

[View this post in your web browser. It contains formatting and images that don't appear in email.]

1. Reviewing what you wrote your similar thread in the Lightroom Queen forum, you didn’t answer this question: In LR Classic’s Import window, are you selecting the Devices or the Files section of the Source panel?

2.

It works when I import the images as follows: if I plug a card reader into the iMac instead of the camera and insert the SD card removed from the camera. Everything works as described in point 1.

To test my understanding, if you connect the camera to the Mac with a USB cable, import photos from the camera, then do a second import from the camera, LR will reimport the photos as duplicates with the filename suffix “-2”.

But if you import from a card reader rather than a USB cable, LR recognizes the photos on the card as duplicates.

Is that correct?

U

UliPAuthor

Known Participant

Hello John,

thank you very much for your email. You’re right, I didn’t actually answer that question. As English isn’t my first language, I must have somehow overlooked it.

However, the fact is that it really doesn’t matter whether I import the images via the camera – PC USB port or via an SD card in a card reader connected to the PC. They are generally not recognised as duplicates.

The images from my Canon camera, however, are recognised as duplicates, regardless of how they are imported. I hope that helps.

best regards

D

drtonyb

Legend

@UliP

This is similar to a bug I encountered when Importing directly from a USB connected camera.

It happens to me with my Nikon cameras on my Windows 11 PC: connect camera via USB, copy photos from camera to the hard drive, Import from the hard drive with Add; Import again, but this time directly from the USB connected camera with Copy; LrC lets me select and import already imported photos again, giving them unique file names (appends -2) if copied to the same folder as the first photos imported.

Nothing has been done to fix it.

dj_paige

Legend

If the problem happens on your iPad, or it happens with Lr 9.2, then you are not using Lightroom Classic (LrC) and you should post in a different forum, namely the Lightroom Ecosystem forum.

U

UliPAuthor

Known Participant

No, in my view, the report is exactly where it should be. As I have described in detail, the problem does indeed arise when importing into LrC15.7 on a Windows PC and a Mac with images that have already been imported via Creative Cloud. And this is regardless of whether the iPad or Lightroom Desktop was involved.

I could imagine that duplicate detection might be causing issues with the milliseconds in the capture time. As I’ve described, the files are binary and identical, having read them locally from the cards as well as imported them via the Cloud.

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