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S
simonbrattphotography
Inspiring
June 15, 2021
Answered

Embedded preview corruption

  • June 15, 2021
  • 4 replies
  • 8087 views

Hi

 

Why when i press 'Embedded Preview' burron on the image in Library mode, do my images get visibally corruped? If i remove that image from Lightroom and resync, its ok again.

Lightroom up to date. 

Example attached.

This topic has been closed for replies.
Correct answer simonbrattphotography

OK cant get the CR2 file attached. But ive just tried an old usb 2 card reader (as you suggested to try), imported into lightroom, not one corruption!!

So looks like it was the card read then!!! even though it was strange i can use it fine without lighroom. 
Anyway, hopefully thats the problem. sorry again. 


Final report. (if anyone is still folowing this). I swapped the USB cable on the CF reader that might have been causing th issues, re imported into lightroom, and they all seems fine. 
So potentially was a dodgy USB cable all along (as you said it might be)

Still interested to hear back on the Embedded Preview button i have that no one else seems to have, maybe its a mac thing. 

4 replies

Rob_Cullen
Rob_Cullen
Adobe Expert
September 4, 2021

Sorry to see you are back with the same problems.

I am curious about your mention of the "Embedded Preview Button"

If you are referring to this Badge that appears on the thumbnails like this-

Then the situation is this- The Badge indicates you are looking at the embedded Preview that the CAMERA created. (if it looked good on the camera screen then it will look good in LrC. When you click on this Badge (button?) you are forcing LrC to now read the raw image data from the file and LIGHTROOM-CLASSIC creates a new standard Preview from the raw data. 

This is when the corruption in the file data becomes evident.

"synced the folder where i used finder to copy the images from card to SSD and that folder has no errors visible in lightroom." If you are still looking at the Embedded Previews (with the badge) then you are still seeing the 'Camera' preview- no matter how many times you Import the file. It is the file raw data that is corrupt.

You still have a problem with hardware. Camera sensor, Memory card, Transfer cable, etc.

Do you have any NEF image with the corruption that will not breach client confidentialety to post in a dropbox link?

 

Regards. My System: Windows-11, Lightroom-Classic 15.0, Photoshop 27.0, ACR 18.0, Lightroom 9.0, Lr-iOS 10.4.0, Bridge 16.0 .
S
simonbrattphotographyAuthor
Inspiring
September 4, 2021

obody seems to get this, but here is the Embedded Preview button i get 

S
simonbrattphotographyAuthor
Inspiring
September 4, 2021

Here is a screen shot from lightroom (using lightroom inport) It varies each time i import. Ill try and upload a raw file (Canon) so its .cr2

Rob_Cullen
Rob_Cullen
Adobe Expert
June 15, 2021

If I understand your descriptions, I might suggest that your photo files are corrupted.

The good image you see, the 'embedded' camera preview may look OK when you import, or even when you re-import, but as soon as you click the 'embedded' icon you are forcing Lr-Classic to build a Preview from the raw data. It is the raw data that is corrupt.

ie. a 'good' embedded view, 'bad' raw data.

You need to investigate where the corruption is occuring- Camera? Memory Card? USB cable?.

See a similar forum thread here-

CORRUPT FILES- BAD CAMERA SENSOR

 

Regards. My System: Windows-11, Lightroom-Classic 15.0, Photoshop 27.0, ACR 18.0, Lightroom 9.0, Lr-iOS 10.4.0, Bridge 16.0 .
S
simonbrattphotographyAuthor
Inspiring
June 16, 2021

willing to accept the possibility, but how come they are now ok?

Ive gone into Lr today and they seem ok, so i deleted two that i remember definately had the issue, reimported them and pressed the embedded preview button and they were fine.

So i guess? the raw file is ok?

S
simonbrattphotographyAuthor
Inspiring
June 16, 2021

Is there a bit of software that i can test my Lexar DF card with?

GoldingD
GoldingD
Brainiac
June 15, 2021

 

 

Using , NVIDIA GeForce GT 650M 1 GB graphics

 

 

Is the option to use Graphics Processor on? That 1 GB is low for that, might not work at all, or might cause issues.

 

Also, a fairly old GPU with poor driver support via Apple, so might be buggy if use Graphics Processor is on.

 

If on, try off.

john beardsworth
john beardsworth
Adobe Expert
June 15, 2021

That's not normal. Are your graphics card drivers up to date?

S
simonbrattphotographyAuthor
Inspiring
June 15, 2021

thanks for the fast reply, i dont know, im using a mackbook pro, ive used it for years. it gets all the updates recommended. never seem to have to look for drivers (unlike a PC)

 

Using , NVIDIA GeForce GT 650M 1 GB graphics

 

 

 

Ian Lyons
Ian Lyons
Adobe Expert
June 15, 2021

As John has indicated, the issue is probably related to the graphics card drivers. Unfortunately, Apple's fallout with nVidia means that updated drivers for their cards is long since a thing of the past (I think Mojave was the last OS that Apple provide nVidia updates). You could try diabling GPU support in Lightroom Classic Prefernces Performance tab, as doing so may help. 

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