Jump to content
jhluxton

Bizarre Problem with a DNG file from an M262

Recommended Posts

Advertisement (gone after registration)

Can anyone explain this totally bizarre problem which has now wasted me half an hour trying to resolve.

 

Yesterday, I was out taking photos.

 

When importing my files from the M262 memory card a SanDisk Extreme 32GB  one of the pictures appearing in thumbnail and in the editing screen is an image I took last October! 

 

It should not be there!

 

I have always had a habit of reformatting cards once everything has been downloaded thus this card will probably have been formatted around 10 times since it was bought last year when I bought the camera.

 

What is even more bizarre if I use the windows file browser and view an enlarged icon of the image file or use FastStone Image viewer the file shows up on screen as the image it should be - the one I took yesterday.

 

It will even open correctly into Photoshop Elements.

 

I have removed the wrong image from the Lightroom catalog and resynced but the erroneous image keeps coming back.

 

Does anyone have any idea what is going on here?

 

Thank you

 

John

 

 

 

 

Share this post


Link to post
Share on other sites
I too have had a similar issue.

 

An import has a thumbnail that I shot months before and erased or formatted out. When I click on the "wrong placed" thumbnail the proper shot opens up.

I found this problem way over my head ....it doesn't happen a lot or enough to be a hindrance but it is down right weird.
But not so weird in the realm of computers.
 

I also don't think it's something I did or can control..... its just a glitch.

 

I use 240M-P  SanDisk Extreme PRO 64GB  it happens in PS Bridge,  ACR and I think but not sure if it happens LR6.....I rarely use that

 

As I said, the photo is always there so I don't worry about it and its only  1 maybe 2 photos on a  4G shoot.

Also it only happens once in a while, so little that I cant run  or haven't tried to run an accurate test to recreate it.....and I'm not sure how I would

 

OK you techies whats going on ????

Share this post


Link to post
Share on other sites

It is a Lightroom or maybe a DNG glitch, it has happened to me several times, but only with files from my M240. The workaround is simple,  just mark the image and choose to build a new preview for the image and the problem will be solved.

Share this post


Link to post
Share on other sites

The camera is supposed to assign unique IDs to each frame. For some reasons only known to Leica, the M cameras assign ID which are not very unique. This must be a bug.

 

When importing images from the storage card or from the camera, LR acts as if the numbers were unique. On importing an image with an ID it has already encountered, it will assign the preview of the old image to the newly imported frame, thus causing much confusion. This must be a bug as well.

 

People familiar to LR have posted suggestions on how to deal with this compound bug. As I am not familiar with LR, I can't say whether the suggestions will work. Also, I can not found them ATM.

Share this post


Link to post
Share on other sites

Pop's explanation is correct. Additionally, we should be aware that formatting the card will NOT erase the images. Sometimes, using a rescue tool, we can find images from a long time ago on a card that has been reformatted multiple times.

Share this post


Link to post
Share on other sites

The funny thing about this bug is that Lightroom knows to import the picture (it knows it hasn't done so before) but doesn't recreate the thumbnail because it thinks it already has it.

Share this post


Link to post
Share on other sites

Advertisement (gone after registration)

Expanding on jaap's post #5 - flash cards keep track of the pictures saved, with a file that is a "table of contents." It describes which memory addresses currently have pictures in them and should not be used for additional pictures. When you do a basic in-camera formatting, the only thing actually erased is that table of contents. The pictures can now be overwritten - but unless you fill up the card every time, overwriting every single 1 and 0, old pictures may survive, even through multiple formattings.

 

As to the original problem: in theory, if you open the .dng picture, and actually make some change to the image settings ("Exposure," or anything else) in the "Develop" module, and then save the .dng, that should update the thumbnail (overwrite the bad one) to reflect the actual picture.

 

But - in Adobe Camera Raw, that is an optional procedure that must be turned on in: Preferences > DNG File Handling > Update embedded JPEG previews > ON or OFF, "Medium" or "Large" thumbnails.

 

Check your LR preferences to see if you have the same option, and whether it is ON or OFF.

Share this post


Link to post
Share on other sites

It happened to me today.

Downloaded the SD card to a Folder then Opened that  folder in PS Bridge.

75 shots only one incorrect thumbnail

Click on the "wrong thumbnail" and the correct photo opens in ACR

I was shooting both DNG and Jpg so the two photos were side by side in Bridge, the DNG showed the incorrect thumbnail.

....it isn't really a problem....but it is curious

Share this post


Link to post
Share on other sites

Oh well pleased to see it isn't just me that has had this problem.

 

I actually have a file renaming scheme in which each file is renamed into a sequence ie L2017_#### so it isn't even the file name generated by the camera.

 

I eventually resolved the problem by dragging the offending dngimage off the card, manually renaming it rather than using FastStone's batch rename and resynced it in Lightroom and everything was fine!

 

John

Share this post


Link to post
Share on other sites

You can avoid the problem by formatting the card in camera after each Lightroom import and ensuring you don't use the cards in different cameras.

Share this post


Link to post
Share on other sites

You can avoid the problem by formatting the card in camera after each Lightroom import and ensuring you don't use the cards in different cameras.

No, you can't, as the problem is produced by a new image having an ID value in its EXIF data which is identical to the ID value of an image already in your image catalog.

Share this post


Link to post
Share on other sites

No, you can't, as the problem is produced by a new image having an ID value in its EXIF data which is identical to the ID value of an image already in your image catalog.

 

No kidding ....so that's why its so random

Share this post


Link to post
Share on other sites

I have this problem too but something far more serious happens to my DNGs where the basic image is there but all the colours are messed up as if looking at an ancient VHS tape that's been recorded over 1,000 times with super saturated colours.

I've copied a few here. The it first happened I reformatted the card. That didn't fix it so I tried a new card but it's still happening.

 

Anyone else seen this or had the same problem before?

Share this post


Link to post
Share on other sites

Afraid I do not know the answer, but have never experienced the fault. I use Lexar Professional 16GB cards.

 

I wonder if the above pictures constitute a new art form?

Edited by wda

Share this post


Link to post
Share on other sites

Thanks anyway. I did a "Quick Look" of the DNGs in the finder (rather than using Lightroom/Photoshop) and they are the same. I'd guess it's probably every 20-30 images I get one but sometimes a couple in a row or 3/10. It's really annoying when I can just about make out an image that I might like but it's only good for the bin.

 

I've seen people trying to flog worse though so maybe I'll start my own gallery with these. 

 

I should probably get the camera back to Leica before the warranty runs out.

Share this post


Link to post
Share on other sites

It is a Lightroom or maybe a DNG glitch, it has happened to me several times, but only with files from my M240. The workaround is simple,  just mark the image and choose to build a new preview for the image and the problem will be solved.

 

Going back to the original posters problem "Bizarre Problem with DNG file"

That the preview shows an incorrect preview. A preview from a different shoot, in my case.

I'm using Adobe Bridge ....What exactly is the fix? I'm not sure how to "build" a new preview in Bridge?

Can someone advise?....Is there a selection I'm missing?

Thanks in advance for the help

Share this post


Link to post
Share on other sites

Additionally, we should be aware that formatting the card will NOT erase the images. Sometimes, using a rescue tool, we can find images from a long time ago on a card that has been reformatted multiple times.

 

That's why I use SDFormatter and often erase using the "Overwrite format" option. In that case no rescue tool may retrieve any of the previous pictures. I perform this only when sure that all the pictures on the card are downloaded on my computer and backup disk.

Share this post


Link to post
Share on other sites

I should probably get the camera back to Leica before the warranty runs out.

 

If you have tried 2 different cards and its an intermittent problem then I would say that its worth contacting Leica and emailing them several of these images to see what they think. There have been a number of threads regarding corrupted images on the forum and most, from memory. have been down to the card but I don't recall seeing any like the ones you have posted. So its well worth getting Leica to check out what is going on.

Share this post


Link to post
Share on other sites

This does look like a sensor problem. The Digilux 2 used to come down with a similar ailment.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By joshjeremyphoto
      Whenever I use the in camera filters they don't stay on when I upload the RAW to Lightroom. The preview of the image shows it with the ffilter but when I click on it it goes back to normal where there is no filter applied. Please help. 

      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden!
      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden!
    • By Anthony C
      Hi,
      I have both a Leica Q and a D-Lux 7 and I use Lightroom to edit my pics. I have quite a bit of purchased presets as well.
      With the Q, no issue at all.
      With the D-Lux, even though my picture are taken in colour and imported in RAW format, some of the presets think the picture is black and white and show me options only in B&W. I have to manually go to the Colour option and click on it to see what the reworked photo looks in colour.
      Anyone with the same issue ? Thanks.
    • By strangeboy
      Hello.
      I'm interested in hearing from anyone whose made the move from an M9/M-E to a 262.
      How are you feeling about your decision?
      I've recently replaced the sensor in my M-E, which included a full CLA from Leica, NJ. It feels like a new camera, but I'm also reminded of the only gripe I've ever really had about it: Limited ISO performance. I max out at 1200, but even that can turn a Summer afternoon into a snowy day in B/W. I'd love to (when necessary) shoot between 1600 & 3200 without the resulting photograph becoming an exploration in Pointillism.
      In addition, weather sealing and the larger sensor seem like a plus.
      Let the CCD vs CMOS debate begin!
      So good people...
      What say you?
      Thanx!
    • By simonCL
      Hi all! 
       
      Apologies in advance for the length of this post! 
       
      I was wondering if you all are able to give me some advice or words of wisdom on whether I should get a Rangefinder Leica. 
       
      At the moment I’m currently using and enjoying my Leica CL & 23mm f2 Summicron. Purchased in Oct 2018. I absolutely love shooting with the CL and for me it was the upgrade I was always wanting. I even adapt some rare and unique vintage m42 lenses to it and get some amazing results. 
       
      Now I’m no professional photographer, just a hobby shooter but the Leica CL I have had really developed my love and passion for photography. At the time of purchasing the CL I was using a Nikon D7500 which I still have (but never use) so for me, at the time the CL was the next step up, and I never thought of going for a rangefinder (couldn’t afford the m10 and lenses anyway lol). 
       
      But now having visited the Sydney Leica store on many occasions to try out the M10 and the rangefinder systems, I’ve grown more interest for a Rangefinder. 
       
      I’m interested in the M240, maybe the M262. I like the appeal of a brassing body though (a bit of individualism I’d say). But honestly I’m not sure which system to go for (and I don’t have the money for a new M10). 
       
      What are the PROS and CONS for each system? What makes you want to stay with that system? (if you have one) what would you recommend I do or go for? 
       
      Now I’ve done heaps of research and reviews on both systems but I really want to hear from everyday people who use them. 
       
      Thanks! 
    • By erniethemilk
      I'm not a heavy user of Lightroom CC, I tend to use it simply for easy processing of the odd photo on my phone or iPad.
      I've noticed the Monochrome profile for my M10-P is missing. I have the colour profile, not the monochrome option.
      Works perfectly on Lightroom Classic on my desktop, just missing on LR CC.
      Anyone any clues as to why and how I put it right.
      Thanks
×
×
  • Create New...