Lightroom randomly rotates previews on import

Hi,
I'm experiencing some weird Lightroom 5.4 behaviour on one iMac (OS 10.9.2). After Lightroom has initially imported the files (Nikon D800 NEF) it builds previews, but some of those previews are rotated by approx 5 degrees with a white background added (see attached screenshot). It looks like it's random for both vertical and horizontal files. I've checked on another iMac running Lightroom 5 and there the files are imported like they should. Also opening the files in Photoshop with Camera Raw seems to be working ok on both computers.
I've removed all import presets, but no luck. I've also completely re-installed Lightroom, but that didn't solve the problem.
Does anyone have any suggestions I could try? Thank you!

For one of the rotated images, go into Develop and open the Lens Corrections panel, click on the Manual tab and see if the "Rotate" slider is not at the neutral zero position. That screenshot looks like manual rotation. If that is the case press and hold the Shift key and the "Reset" button at bottom right will change to "Reset (Adobe)", and if you click on it does the image revert to "normal"?
If so, you've inadvertently changed the default develop settings for that camera (and probably the ISO settings as well as it isn't happening on all images). To reset the default develop settings, click on Develop menu>Set Default Settings>Restore Adobe Default Settings.

Similar Messages

Can Lightroom render 1:1 Previews when importing my Photos?

Q: Can Lightroom render 1:1 Previews when importing my Photos?
FAQ revised 25 April 2009
Ans: Prior to version 1.3 Lightroom did not support 1:1 preview rendering during import, the actual options for Initial Previews being: Embedded or Standard. However, more recent versions allow four types of previews to be rendered during import (i.e. Minimal, Embedded & Sidecar, Standard,and 1:1). It's also worth noting the following on Lightroom import behaviour:
1. Minimal (Lightroom default) or Embedded & Sidecar is by far the quickest method for getting your photos into the Lightroom catalog. However, the lack of Standard, which is the minimum that Lightroom can actually work with, means that the application will render standard-sized on demand (i.e. as thumbs/photos become visible within the photo Content area). Asking Lightroom to undertake this task at the same time as you're trying to use the application will result in sub optimal performance.
2. Importing your photos with the Standard preview selected within the Import dialog will take longer than 1 above, but on completion Lightroom will already have previews that match the minimum requirement for working in the Library. Assuming that you won't be looking at every image at 100% (i.e 1:1) then this preview size will allow you to quickly review, rate, label, even make quick colour/tone adjustments, etc the photos within the Library module. If you need to see a photo at 100% then Lightroom will render that preview on demand (while it's being rendered you'll see the "Rendering Preview" overlay appear at bottom of preview). Note that when using a 23" or larger monitor it to is best to set the Standard sized previews so that they are rendered at 2048 pixels
3. Importing your photos with the 1:1 preview size selected will result in Lightroom taking even longer to complete the import process than would have been the case if standard-sized had been chosen. 1:1 previews also take up significantly more disk space than standard-sized.
If you're not going to be working on the photos immediately after import but do need to get them into Lightroom as quickly as possible, then the best option would be to choose import option 1. Once the photos have been imported choose either Render Standard-sized Previews or Render 1:1 previews from Library module Library>Previews menu.

When I search these forums for "CFCopyFormattingDescription", I find a bunch of crash reports posted that look almost exactly the same as mine. It appears there's a bug in iPhoto, perhaps when reading metadata from the JPG file (readRawTiffPropsFromPath).
Interestingly, the Preview app can open and display the file just fine. I even opened the inspector and it showed all of the TIFF and exif metadata just fine, no crash. The file also opens just fine on Windows.
Now how do we get the attention of the iPhoto development team so I can send them the photos, have them reproduce the crash, and fix it?

Lightroom will not let me import photos from either camera or desktop. I can see them in the preview part of Lightroom but when I click import, just says they can't be read. HELP!

Lightroom will not let me import photos from either my camera or my desktop. They show up in the preview bit of Lightroom and I select the ones i want to import, then add my metadata info etc and file handling, but then when I hit IMPORT just keeps saying they can't be read. SO FRUSTRATING.

F. McLion wrote:
You are copying the photos. Does LR have the permission to delete the files from its source location - as DdeGannes suggested? Maybe this dialog is misleading.
Did you try to just add files copied to the destination before - just for finding the issue?
If nothing helps: Any chance you can upload one of the jpg to some file sharing service so we can have look at it?
I believe DdeGannes suggested permission on the Destination folder (not the source folder). Performing a copy requires only Read&Write permission on the destination folder, not the source folder. You need to go into your operating system and change the permissions to Read&Write on the destination folder. (If you don't know how to do that, go to your favorite search engine and type in Change Permissions Mac)

I have lightroom 5 when i cannot import my RAW images. When I tried a blank box for the images are there stating tha the preview for the image is unavailable

I have lightroom 5 and I cannot import my RAW images When I tried a blank box for my images appear stating that my previews is unavailable in this file. When i do hit import it comes out 0 in my catalog

Jim Hess asked:
And if you use Nikon Transfer to download the images?
I don't see the answer.

Rotate images DURING import

To be able to rotate images DURING import would be a nice feature. I can do this with Apple's Image Capture. They are imported wih the rotation I have requested, and this show in the icons too.
I like popping a folder open and view my images in icon view. I don't have to open a program at all. It's quick and efficent way to view my images, but also the orientation is correct right from the beginning with the original. Maybe one more step in the import process, for those of us who don't mind it, BUT it's also one more step I DON"T have to do in Lightroom, Photoshop, or any other program. And the rotataion in Lightroom are temporary to the eye anyway.
This is good feature/option to add to the import. Lightroom ROCKS. It just elimanted a multi-step, multi-software import process. Almost. The "rotate during import" feature would seal the deal. It's a big deal to me. Like the Apple Image Capture, you could place rotation icons on each image in the preview window. If you added that, man, solid gold!
thanks,
Craig

DW Harrison:
Sure, I get that, but I can understand how non-destructive editing is useful in image adjustments where later you may regret having added too much saturation in the reds, so you're glad you can go back to the original. But who wants a portrait image rotated in landscape orientation EVER? It's a personal preference, and, no, not a priority in my opinion.
Ian:
You may think your post was enlightening, but, perhaps to someone else. Surely not me. I've always known what the 'real cause' is -- some software, i.e. WEB BROWSWERS, ignore the EXIF tag. Hence, my question was more of a philosophical one: why have portrait images rotated sideways, only to have aware applications ON-THE-FLY rotate them according to the EXIF tag? Why not just have the original file re-written in different dimensions?
For that matter, I specifically spelled out 'why can't... [the file be] rewritten from 800x600 to 600x800'. Hence I find your response 'They will be if the rotation tag is set in the camera' pretty darn irrelevant. No, they WON'T be rewritten rotated. Only by Graphic Converter if you have the option selected, or other applications that don't come to mind right now.

Scanned images rotate slightly upon import- any idea why and how to fix?

I have been scanning photo images on my Epson Workforce 845. The images are straight in preview but rotate slightly upon import. Does anyone have an idea of a fix? The files themselves appear rotated as stored on the computer and before transferring to iPhoto.

You wrote:
"The windows viewer application ignores all profiles and treats all files as if they were sRGB."
False. Windows 7 Photo Viewer is fully color managed.
As for the reason why Photoshop cannot use the embedded profile, read for example
http://support.microsoft.com/kb/935893
Hannu

Can't preview or import from NAS

Hi,
I just bought Lightroom 5.2 but I'm not able to preview or import any files from my Synology NAS (4.3 software version) where I keep all my photos.
I see the filestructure and the files but I don't see a preview version of the file and when I import I get "The files appear to be unsupported or damaged".
When I look at files to import on the local harddrive, I see previews of the files so it seems to work there.
I have no problem displaying the NAS photos using OS X Finder. I assume there is some general setting that is wrong because out of 15000 photos I could not import any, only imported 5 short iPhone movies that accidently happened to be stored in the photo file structure.
Greatful to any suggestions!

Hi mikael j,
I have moved this discussion to the Lightroom General forum, where you should be able to get more help on this issue.
Alec

Lightroom Star Rating Loss on Import

Hello everyone!
Longtime LR user, new to the forums and looking for a bit of insight.
When shooting on deadline, I start my workflow by running my images through Photo Mechanic where I star rate, caption and FTP a few. Afterwards I typically head home and then import my images into LR for further processing and cataloging.
What I've discovered is that I will occasionally lose the star rating on about 65% - 75% of those images if I begin to evaluate the them immediately after they've been imported.
(Typically importing between 1000 - 3000 RAW images with "Minimal" previews.)
(Evaluate by showing larger previews or asking to just see starred images.)
This problem does not occur if I give LR about 7 to 10 minutes after I've imported the images and then ask to see only star rated images. When I give it that extra time after import, my star ratings will invariably show up every time without problem.
I have taken note of the fact that even when selecting "Minimal" previews LR will still "process" the files as I can see their color shifting photo after photo within grid mode as I sit in front of my computer. It is my presumption that it is during this time that LR is evaluating the XMP info and adding that info to the catalog. I presume this because it seems that after LR has completed this process all of my star rated images will show up.
If this is in fact what is happening, part of my problem is there is no way for me to determine when LR is done with this initial "processing". This is because it seems LR begins "processing" whichever images are currently being displayed. I know this because as I scroll down the grid of images I see the color shift to begin on the frames that I've just scrolled to. Consequently I have no way of determining when this initial "processing" is done other than to give LR 7 - 10 minutes.
I should also mention that I have on occasion quit LR, reopened the folder containing my images in Photo Mechanic and all of the star ratings show up as they should. I have then quit Photo Mechanic, restarted LR selected all the images and then prompted it to "Read Metadata from File" but it still does not adapt the star rating that is associated with each image.
The only way for me to fix this issue is by removing the folder containing the errored images, re-import it into LR, give LR 7 - 10 minutes to "process" it's contents, and hope that when I do go to look at only starred images it will have completed it's initial processing to reveal all of those images that have been star rated.
Re-reading this I see that it's a mouthful but do hope that you might be able to answer these questions:
1. Is it this "processing" that I'm waiting for Lightroom to complete upon initial in import?
2. Is there a way for me to tell when that "processing" is complete?
3. Why doesn't forcing LR to "Read Metadata from File" overcome this problem?
Currently running LR 3.4.1 on a Macbook Pro running OS 10.6.8.
Thank you sincerely for your help ( :
Justin Kase Conder
www.JustinKaseConder.com

Hi Bill
The new people icons in PSE11 & PSE12 are not the same as keywords. You could use them as the basis to add keywords (names) in PSE and perhaps write metadata to files. Then start over in Lightroom:
File >>New Catalog
Choose a new catalog name and save.
When the empty Lightroom catalog opens - try the import from PSE again.

Lightroom 4.1 - I Cannot import Nikon D300s video / movie files into catalogue - Can you?

Hi,
I can import all of my movie files produced by other cameras into my Lightroom 4.1 catalogue, I have the most recent version of Quicktime installed and obviously as I can import other camera model movies it proves that the basic Lightroom services and processes are working fine.
When I try to import the movie, first on the import module it says 'unable to create preview' and then it states, 'this movie file contains no video frames'.
I had gone back to Lightroom 3.5, but have since realised this version doesn't publish my movie files to flickr if they are >30Mb due to the way the Lightroom 3 Publishing module craps out on memory usage.
I know the D300s records movies using the J-MPEG codec, but I'm not sure if this is a problem with the codecs installed on my machine or whether Lightroom does not support this codec?
Before I waste another few days on trying to resolve the D300s import issue, can anybody else preview and import their Nikon D300s video files into Lightroom 4 or 4.1?
Thanks,
Simon

i have issues with some MPG files that can not be imported.
these files are not from nikon cameras but it shows that something is broken in LR 4.1
they worked with LR v3.6.
example:
Format                           : MPEG-PS
File size                        : 605 MiB
Duration                         : 4mn 25s
Overall bit rate                 : 19.1 Mbps
Video
ID                               : 224 (0xE0)
Format                           : MPEG Video
Format version                   : Version 2
Format profile                   : Main@High 1440
Format settings, BVOP            : Yes
Format settings, Matrix          : Default
Format settings, GOP             : M=3, N=12
Duration                         : 4mn 25s
Bit rate mode                    : Variable
Bit rate                         : 18.5 Mbps
Width                            : 1 280 pixels
Height                           : 720 pixels
Display aspect ratio             : 16:9
Frame rate                       : 24.000 fps
Color space                      : YUV
Chroma subsampling               : 4:2:0
Bit depth                        : 8 bits
Scan type                        : Progressive
Bits/(Pixel*Frame)               : 0.836
Stream size                      : 581 MiB (96%)
Audio
ID                               : 192 (0xC0)
Format                           : MPEG Audio
Format version                   : Version 1
Format profile                   : Layer 2
Duration                         : 4mn 25s
Bit rate mode                    : Constant
Bit rate                         : 384 Kbps
Channel(s)                       : 2 channels
Sampling rate                    : 48.0 KHz
Video delay                      : -83ms
Stream size                      : 12.1 MiB (2%)

Lightroom is changing metadata on imported photos

I imported a batch of RAW images into Lightoom 4.4 and see that a number of the images are displaying the icon warning that metadata has been changed in Lightroom although the affected images have only just been imported into the catalog and I have not made any changes to them. 130 images out of a batch of 300 are being affected.
I have selected the affected images and re-read the metadata using Metadata / Read Metadata from File, but within a couple of minutes of being re-read, the metadata changed icon has reappeared.
My initial thoughts were that I had changed one of the preferences and something was being automatically applied, but if that was the case then I would have expected it to be applied to all 300 images in the batch which were taken on the same day on a single camera. I've created a smart collection to identify images with metadata changed in Lightroom and find that they appear to be randomly spread through the catalog affecting both RAW images and jpegs from 3 different cameras.
In order to exclude any changes to Lightoom preferences I may have made, I installed Lightroom 4.1 on another PC and created a new catalog using the default settings. I then imported the same batch of 300 RAW images and confirmed that the same ones displayed the warning icon that metadata was changed in Lightroom .
Can anyone explain what might be causing this?
The PCs are Windows 7 Professional, Lightroom 4.4 (Lightroom 4.1 on the test PC), RAW files are from Nikon D90 and D7100 cameras.
Thanks

I agree with most of your points:
Points 1, 2, 3 - I agree.
Point 4.
yes - all of my RAW files have .xmp files associated with them as they contain the metadata and keywords I have entered via Bridge/ACR.
Lightroom imports these details but shouldn't then be making any additional changes which need to be written back to the xmp files. This is where the problem has surfaced as Lightroom has made unknown changes to some of the photos and wants to write them back to the xmp files - see my comments below about point 6.
Point 5.
By installing a trial copy of Lightroom 5.3 on a different PC and creating a new catalog I avoided carrying forward any incorrect preferences etc I may have previously used - all photos in this new catalog have been freshly imported for testing. The fact that Lightroom displays the "metadata has changed" icon to the same photos as my original Lightroom 4.4 installation after importing them demonstrates that an unidentified Lightroom process is making changes to some (but NOT ALL) of the imported photos.
The problem is identifying WHAT Lightroom has changed and the implications of these changes.
Point 6.
"auto write to xmp" - This is not selected in my catalog settings as I want to be in control of when Lightroom updates the xmp files. At present I am still learning Lightroom so I don't want to accidentally write any changes back to the xmp files until I am completely sure of the consequences, hence my main work still takes place in ACR.
Point 7.
My current workflow choice is to continue using xmp sidecar files as per the following statement at
http://www.adobe.com/uk/products/photoshop-lightroom/faq.html
"Changes you make in Lightroom can appear in Camera Raw and vice versa. To complete this interactivity, changes in both Camera Raw and Lightroom need to be written to XMP metadata. This is so that each software application can recognize the other's edits."
- but I have to be confident that any Lightroom changes to the xmp files are as a result of my planned actions.
Point 8.
All of the default Develop Settings are deselected in my preferences/presets and I don't have any import presets - the develop settings and metadata are set to "none".
Do you have any suggestions on how to identify what changes Lightroom has made to the photos where it has set the "metadata has changed" icon?

Render previews on import meaningless?

Normally LR only renders previews once for a folder. That means, if you ask it to create them for a folder where they are already rendered, LR does not render them again.
Observation on a Windows-LR:
Import a folder, check render previews on Import.
After that ask LR to render the previews for this folder manually. It renders them for the whole folder again.
Now we have to possibilities:
1.) LR does not render previews on import, even if asked so
2.) LR forgets that it has already rendered the previews and does it again.
Could anyone from the LR Team issue a statement regarding this?
Thank you.

Lightroom shows a progress indicator on top. After finishing importing the previews should have been generated.
Besides this, the import has been done several days/weeks ago, and lightroom would have had plenty of time to render since then. :-)
I don't think, rendering of previews is a background process (without progress indicator) like automatically writing xmp is.

How can I edit lightroom 5 smart previews on mac book pro (mbp) when the lightroom 5 master image files are on my external hard drive is disconnected from the mbp

How can I edit lightroom 5 smart previews on mac book pro (mbp) when the lightroom 5 master image files are on my external hard drive is disconnected from the mbp? So far when I try to disconnect the external HD from the mbp, I get the following pop up window: The disk "external hard drive A" couldn't be ejected because "Lightroom" is using it. Quit that application and try to eject this disk again. When I do that and restart Lightroom 5, the Adobe Photoshop Lightroom - Select Catalog screen pops up but doesn't list my external hard drive A as a choice.
I've reviewed Adobe's Lightroom Help | Smart Previews Lightroom 5 web page and still haven't been able to figure what I'm doing wrong. Any help would be appreciated.

Your internal HDD. by default, is named 'Macintosh HD'. From what information you supplied, it looks like there is already a Lightroom catalog installed on you local (internal) HDD using the standard naming convention Adobe uses as well as a Lightroom catalog on your external drive which you created. To be sure of which catalog Lightroom is loading when it starts up, To do this, start Lightroom as you normally would. After it starts, select the Lightroom menu item, then select the Catalog Preferences item and finally, navigate to the General tab. The Location information will tell you exactly what catalog Lightroom is opening by default. This will likely be the Photography Mac Book Pro Versions catalog on your external HDD. Once that is confirmed, you are ready to proceed. As an additional test/verification, you can shut down Lightroom and, this time, start Lightroom while holding down the ALT/OPTION key. This will cause Lightroom to pause and display a screen which will allow you to chose a different catalog to open. Navigate to the /Users/[user name]/Pictures/Lightroom folder and select the Lightroom 5 Catalog.lrcat file. When Lightroom comes up, there should be no previews or folders as this catalog should be empty. Now you can be certain which catalog is being used and which catalog has all your data and you are ready to migrate your current catalog. Shut down Lightroom.
To migrate your current catalog, use Finder to locate your Photography Mac Book Pro Versions folder on your external drive. Select the folder and select COPY from the context menu. Next, use Finder to navigate to the /Users/[user name]/Pictures/Lightroom folder on you internal HDD. You can start at the Macintosh HD level and work your way down by opening each level (Macintosh HD/Users/[user name]/Pictures). Select the /Pictures folder and then select PASTE... from the context menu. When the COPY/PASTE is complete, you should see the following files on the Macintosh HD:
Macintosh HD/Users/[user name]/Pictures/Lightroom/ and
Macintosh HD/Users/[user name]/Pictures/Photography Mac Book Pro Versions
The Macintosh HD/Users/[user name]/Pictures/Lightroom folder will contain the empty default catalog the Adobe created when Lightroom was installed and Macintosh HD/Users/[user name]/Pictures/Photography Mac Book Pro Versions will contain a copy of the catalog you created on your external HDD.
You are almost done now. Make sure your external drive is still attached for this step. Restart Lightroom using the ALT/OPTION key again. When the Select Catalog screen appears, select the Choose a Different Catalog button (lower left side). When you do, a Finder window will open to allow you to navigate to a catalog of your choosing. Navigate to Macintosh HD/Users/[user name]/Pictures/Photography Mac Book Pro Versions and select the file Photography Mac Book Pro Version.lrcat. This is the copy you just created. Select the Open button and Lightroom should start. You should see all of your previews and settings just as before. Also, in the left hand panel, all of your folder should show up and none of them should be dimmed and none of your previews should display a small exclamation point badge. Either a dimmed folder name or an exclamation point badge indicates that Lightroom can't find the associated image file. If everything looks good, go to the Lightroom menu, select Preferences and then select the General tab. Under Default Catalog, select an option to either load the LAST catalog opened or select the Users/[user name]/Pictures/Photography Mac Book Pro Versions catalog from the drop down. Shut down Lightroom and then restart it normally. This time, when Lightroom starts, you should be viewing the new copy of your catalog. You can confirm this by looking at the General tab on the Catalog Preferences screen (Lightroom/Catalog Preferences menu items). Shut down Lightroom once again and this time, eject your external drive before restarting. This time, your folders in the left hand panel will be dimmed but you should be able to work with your smart previews. If Lightroom should display a Select Catalog screen with the external drive detached, double check your settings as it indicates Lightroom is still looking at the copy of the catalog on the external drive rather than the new copy you made.
Finally, if you are seeing dimmed folders and/or exclamation point badges with the external drive attached, this indicates a problem. You can select any folder and select Update Folder Location from the context menu. This will allow you to navigate to the copy on the external drive and select it. Lightroom will then update the catalog (select to synchronize the content). This will not only clear the dimmed folder problem but also remove the exclamation point badges for all photos in that missing folder. However, it may indicate that not all went well with the copy of the catalog so make sure to verify all went well. You can use the Get Info option on the two folders. You should see the same number of files/folders for both the copy on the internal drive as well as on the external drive but you can't rely on the byte count because of the possibility of differences between the geometry of the two drives. Hope this all helps!

Preview's "Import from Scanner" documents -Text Tool cannot be activated.

Any documents created within 10.6 and printed/saved as a pdf file can be opened in Preview and the Text Tool activated allowing selection of text and copy/paste or text highlight actions made.
Using OSX 10.6.7 Preview application using the File > Import from Scanner (Epson V500 scanner), the scanned document cannot activate the Text Tool. Only the Move and Select tools cans be selected, activated and used. It's as if Preview's document scanned image using Format-PDF, the scans appear to be an image scan of the text/document into a PDF file and not using OCR to allow a Text Edit.
I can scan a printed document using Acrobat and my Epson scanner and the text tool within Acrobat or Adobe Reader works fine.
Is this a shortcoming within Preview using Format-PDF that the Text tool cannot be activated or used on Preview scanned documents containing text? If so why is Preview's text tool even offered?
If Text Tool can be used on a Preview scanned document…How ? Please!

After further research I have been able to answer my own question regarding-
"Preview's "Import from Scanner" documents -Text Tool cannot be activated."
In Apples Mac 101 Support article entitled: "Using a scanner (Mac 10.6) last modified on March 15, 2011, states: "Item 6. Click Scan to scan. Note: The scanned items will become JPEG images with 300 dpi"
So there it is…Any item (or printed document) scanned under Preview using the selected Format-PDF will be scanned as a JPEG image.
That' s why the Text Tool cannot be activated, it's not being scanned as text but as an image.
If a document is created within the computer via Pages, Text Edit, Word etc. and saved using the "Print-PDF-Save asPDF" file option, the already digitized text is saved within the PDF file and can then the PDF file can be opened in Preview and the Text Tool will be available for use to copy/paste or highlight.
Charlie...76 years old and still Mac'ing

Lightroom 2 Catalog Previews.lrdata?

I am running into space problems on my C drive (hard to imagine, but I my computer was configured before LR and iTunes). I have moved the iTunes music to another drive, but still need to free up space. LR is using over 3GB in the following location:
C:\Documents and Settings\<user>\My Documents\My Pictures\Lightroom\Lightroom 2 Catalog Previews.lrdata
Under it are folders 0 through 9 and A through F (plus a file called thumbnail-cache.db). These in turn have their own subfolders. Can I remove the whole C:\Documents and Settings\DandJ\My Documents\My Pictures\Lightroom\Lightroom 2 Catalog Previews.lrdata structure? Do I need to change a preference to have this preview stuff go to a different drive in the future? My 'Camera Raw Cache Settings' is now pointing to a different drive, but this doesn't seem to be the same thing.
I would LOVE to have that 3GB+ free for other things (like defragging without having to move stuff back and forth)!
Thanks.

You can move your Lightroom catalogue and the previews to a different drive. The previews always must be in the same folder that the catalogue lives in. After you move them, simply double-click on the moved catalogue file to open it, and away you go.
Hal

Lightroom 5.6 Win8 64 import of some photos are not possible

Lightroom 5.6 Win8 64 import of some photos are not possible: the photos are grey, the file name of the photos are already excisting in the catalog, older different photos, don’t Import Suspected Duplicates is not selected. There is no difference selected or not, the photos (Import are not possible) are always grey with the notice: These photos would be already imported! All other photos could be imported and gets grey.

my-wedding-foto.de wrote:
Lightroom 5.6 Win8 64 import of some photos are not possible: the photos are grey, the file name of the photos are already excisting in the catalog, older different photos, don’t Import Suspected Duplicates is not selected. There is no difference selected or not, the photos (Import are not possible) are always grey with the notice: These photos would be already imported! All other photos could be imported and gets grey.
When Lightroom greys out a photo in the Import dialog box, it means the photo is already in the catalog. It doesn't mean that it is matched with an older photo with the same name ... in order for there to be a match, the file name and capture date and file size must be identical.
So Lightroom thinks you have already imported the photos, and you think the photos have not been imported. Now I'm sure you are a very nice person, but I believe Lightroom. What you need to do is to find the photos in your Library Module and use them there. The photos can be found by searching for them by file name, after turning off all filters, and after clicking on All PHotographs in the Library Module.

Lightroom randomly rotates previews on import

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