Black line across frame.

[Jptsr1]

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I got a couple images with a black bar across them (Edit: from my SL2). 2 out of 200 maybe. Did a couple searches and didn't come up with anything. Anyone have an idea what this might be? I've had a similar issue with flash before and I'm assuming the same thing is possible in natural light? I was at 1/60 which I guess was kind of slow.

 

 https://drive.google.com/drive/folders/1LHlcx6AFJ6R5LRIDf0Y6LHDzHO3T1OPy?usp=sharing

Edited January 27, 2024 by Jptsr1
add info

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[frame-it]

SL601 or SL2 or SL2S ?

3 different sensors

[Jptsr1]

2 minutes ago, frame-it said:

SL601 or SL2 or SL2S ?

3 different sensors

SL2

[pop]

Does it affect jpg images only or DNG ones as well?

Have you tried reformatting your storage card in the computer, or using a different (brand new) storage card?

How large is your storage card? Have you tried using a smaller one?

[Stuart Richardson]

Looks either like a sensor failure or a card failure to me. The line looks too even for a shutter problem...to me at least. I would try changing the card and see if it still occurs. Also just take the lens off and fire the shutter and see if there are any obvious problems. But in general this looks electronic. I have seen lots of sensor failures where a single row of pixels went out, and this is generally easy to map out, but never a black bar like this. If it is only 2 out of 200 that gives a bit more hope that it is a card issue...like the card not writing fast enough or getting corrupted somehow. Hopefully it is that. A sensor issue would likely mean a trip to Leica.

Edited January 27, 2024 by Stuart Richardson

[Jptsr1]

3 minutes ago, pop said:

Does it affect jpg images only or DNG ones as well?

Have you tried reformatting your storage card in the computer, or using a different (brand new) storage card?

How large is your storage card? Have you tried using a smaller one?

Haven't tried any of that because it Just happened. Its in the DNG file and the jpeg converted in LR. They are Sandisk 256gb cards. Your line of questioning got me thinking though. There is no black line in the preview on the screen of the camera in either photo. There is also no black line in the lightroom preview. Lastly, if i bring the photo directly from the card onto my Mac, there is no black line, until that is i import it into lightroom. I'm gonna assume i got some corrupt data that lightroom is picking up on conversion. Looking back at the photos I remember I was shooting single frames but got back on the shutter very quickly. Likely before the data was written. Both shots after both photos with the black line are out of focus and in the same way if that makes any sense?  

[Stuart Richardson]

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If I understand correctly, the preview image in the OS is generally a jpeg sidecar file, not based on the full raw, at least until you open it. I think it may also be the jpeg that is the preview on the camera. But I would say that if you open up the file and it has this line, but otherwise most of them are fine, that suggests corrupted data, rather than a broken sensor, as I initially thought it might be. As far as I know, the data is pulled off the sensor sequentially (rather than all at once like a global shutter), so if there is a disruption in the data reading or writing, then I can see how it might leave a black bar like this for several pixel rows.

[frame-it]

25 minutes ago, Jptsr1 said:

Haven't tried any of that because it Just happened. Its in the DNG file and the jpeg converted in LR. They are Sandisk 256gb cards. Your line of questioning got me thinking though. There is no black line in the preview on the screen of the camera in either photo. There is also no black line in the lightroom preview. Lastly, if i bring the photo directly from the card onto my Mac, there is no black line, until that is i import it into lightroom. I'm gonna assume i got some corrupt data that lightroom is picking up on conversion. Looking back at the photos I remember I was shooting single frames but got back on the shutter very quickly. Likely before the data was written. Both shots after both photos with the black line are out of focus and in the same way if that makes any sense?  

download rawdigger and open the dng file to check.

[Jptsr1]

9 minutes ago, Stuart Richardson said:

If I understand correctly, the preview image in the OS is generally a jpeg sidecar file, not based on the full raw, at least until you open it. I think it may also be the jpeg that is the preview on the camera. But I would say that if you open up the file and it has this line, but otherwise most of them are fine, that suggests corrupted data, rather than a broken sensor, as I initially thought it might be. As far as I know, the data is pulled off the sensor sequentially (rather than all at once like a global shutter), so if there is a disruption in the data reading or writing, then I can see how it might leave a black bar like this for several pixel rows.

I believe you are correct. Further testing pulling the DNG file into anything other than Lightroom Classic yielded a "clean frame". Preview for Mac shows no black line at all. Apple Photos likewise shows no black bar. Pulling it into LR and Photoshop yielded a black line for a half second then a clean frame again. Something is going on with the file when loading into Lightroom classic.  

[Jptsr1]

7 minutes ago, frame-it said:

download rawdigger and open the dng file to check.

Not sure what I should be looking for in RawDigger but there is no black line in the DNG files when I use it to open. 

[Stuart Richardson]

Lightroom makes its own jpeg to display on screen for processing (it would take too long to write all the change of every slider with the full res dng), so it is possible that the lightroom preview got corrupted. So the underlying file might be ok. In general I would recommend formatting the card and/or swapping it out. In the future probably best to use a card reader instead of importing directly from the camera. Removes one variable at least. 

[frame-it]

19 minutes ago, Jptsr1 said:

Not sure what I should be looking for in RawDigger but there is no black line in the DNG files when I use it to open. 

so the DNG file is ok, then you need to check lightroom preferences, preview settings and especially GPU settings. you didn't  mention which GPU your mac has, and if lightroom is actually using the GPU

 

Edited January 27, 2024 by frame-it

[Jptsr1]

21 minutes ago, Stuart Richardson said:

Lightroom makes its own jpeg to display on screen for processing (it would take too long to write all the change of every slider with the full res dng), so it is possible that the lightroom preview got corrupted. So the underlying file might be ok. In general I would recommend formatting the card and/or swapping it out. In the future probably best to use a card reader instead of importing directly from the camera. Removes one variable at least. 

My mistake if I said over USB, I always use a card reader or Bluetooth/wifi. Im one of the few guys that has actually experienced frying a camera due to dirty power. In any case has anyone ever told you your brain is magic? You made me think of something else. Pulled the images off the card in a coffee bar onto my ipad before i left chinatown. No bar. Lightroom or something else on my Mac definitely corrupted the file I think. 

[Stuart Richardson]

If you still have the files on the card, probably best to delete them on the Mac and reimport them and see if they are fixed...

[Jptsr1]

55 minutes ago, frame-it said:

so the DNG file is ok, then you need to check lightroom preferences, preview settings and especially GPU settings. you didn't  mention which GPU your mac has, and if lightroom is actually using the GPU

 

You lost me after "settings" I have a M1 Macbook Air. Not sure what any of that is or how I would check it. Is the info in here?

 

Lightroom Classic version: 13.1 [ 202312111226-41a494e8 ]
License: Creative Cloud
Language setting: en-SG
Operating system: Mac OS 14
Version: 14.2.1 [23C71]
Application architecture: arm64
Logical processor count: 8
Processor speed: NA
SqLite Version: 3.36.0
Built-in memory: 8,192.0 MB
Real memory available to Lightroom: 8,192.0 MB
Real memory used by Lightroom: 825.4 MB (10.0%)
Virtual memory used by Lightroom: 414,298.5 MB
Memory cache size: 272.9MB
Internal Camera Raw version: 16.1 [ 1728 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 1231MB / 4095MB (30%)
Camera Raw real memory: 1811MB / 8192MB (22%)
Standard Preview Size: 3840 pixels
Displays: 1) 3840x2160, 2) 2880x1800

Graphics Processor Info: 
Metal: Apple M1
Init State: GPU for Image Processing supported by default
User Preference: Auto

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/T7/Samsung7/Samsung7.lrcat
Settings Folder: /Users/blaineburnett/Library/Application Support/Adobe/Lightroom

Installed Plugins: 
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Flickr

Config.lua flags: None

Edited January 27, 2024 by Jptsr1
wrong computer

[Jptsr1]

37 minutes ago, Stuart Richardson said:

If you still have the files on the card, probably best to delete them on the Mac and reimport them and see if they are fixed...

That would have made too much sense. I formatted the cards and relegated them to my R6. If this happens again I'll definitely do that though. 

[Jptsr1]

Just in case anyone else comes across this thread in a Google search or something while having the same issue, I do believe the files were corrupted at some point and the issue is with how LRC reads and processes them. I searched through all the pictures Ive taken since I got the SL2 this Christmas and found one other photo with the same issue. So thats 3 out of 1562 frames. I only have versions of the DNGs that Lightroom has touched so I cant say that it wasn't an issue with my camera. What I can say is that all three corrupt photos when transferred from my iPad (where I had an additional copy) had no problem. The problem did show up however with the files (from the Ipad) with any edits. So, no bar in the original file but bars in files that had LR edits or had been opened at all in LRC. The weird part is the bar only showed in LRC not LR or PS or RawDigger or any of my Topaz software. Even in Apple picture and photos, nothing. Only LRC in the preview and the jpeg output. Even more weird is the bar didn't show up every time the DNG was opened in LRC. When I woke up this morning there was no bar and then it reappeared in a subsequent view. 

In the end I deleted all versions of the file off my laptop, transferred the three unedited DNG files from LR to LRC and all seems to be right with the world. I wish I had the original files on the memory cards so I could partially rule out the camera but I formatted them. My guess is something happened on the original import. Perhaps with my Ugreen multihub and card reader which had a-lot going on at the time of the import (power, ssd, Dell ultra-sharp). If I have the problem again in the future I'll update. 

 

-Hope this helps.     

[Jptsr1]

Starting to think maybe my M1 Macbook air doesn't have the chops to deal with these SL2 files. Still getting the random Black bar on around 1 in every 300 photos. The bar is definitely in the preview. Delete the file and reimport it from the card and the bar disappears. Only in lightroom classic. The files are fine With any other software. Also getting weird multicoloured vertical and horizontal stray lines on some photos. Zoom in and out on the preview or switch modules and they disappear. I deleted LRC and reinstalled it. Still wonky! Not sure what the problem could be. This Macbook Air chugs through R5 files with ease. I edit video thats much more resource intense with no trouble. 4 different camera brands, 6 different bodies and the SL2 files are the only ones I seem to have issue with. 

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