Horizontal colored bands appearing in imported raw files

having same issue here. it's been a while i had it before now it doesn't happen anymore with new raw files, perhaps new camera, D750? or new computer Mid 2014 MacBook Pro, all happened imported thru Apple Aperture though.

Weird thing is that sometimes NEF while renders normal when I tried regenerate preview manually. This attached raw file didn't come back, shot with D3X, imported to Mac by Sandisk Firewire 800 card reader from Sandisk CF card. Now I shoot D750 with Transcend SD card and directly copy card to Mac, no problem albeit using Aperture still.  hmmm...@

I am having a similar problem

sometimes no problem. Occasionally I import and don't convert to DNG.   No problem however when I convert to dng on import my files are corrupted with intermittant rows of defective pixels. Solved problem by abandoning raw but there must be a hardware glitch. Using Panasonic raw and apple Lightroom  cc

Hi everyone,

on the chance of making this more confusing, I'd like to add my experience. The whole affair is quite a time intensive issue, and if you don't have backups all is lost it seems. My wife has the same problem on her iMac - however with a slightly different setup.

In her workflow originals first get onto an archive drive. She imports from that very same archive drive into the LR library which is on the internal hard drive (copy to that hard drive as part of the import). This worked fine until recently sometimes all imports show the lines problem (see upload below). The originals on the archive drive are still fine and show no damage. The damage is only done to NEF raw Nikon files, not to JPGs. In one import session it will either be all NEF files damaged or none. repeating the import process sometimes results in damaged files and other times in correct files when (re)importing the same(!) files. Although an immediate reimport would always show the issue, does this hint at some kind of environmental problem? It is indeed very confusing as I cannot establish a pattern or any hardware or software changes that are obvious and this behavior of LR damaging these files seems to be on and off. I would love to know if Adobe product guys are aware of it... I hope this helps eventually fixing it or tracking down the root cause of the issue.

C

Did anyone get any feedback from Adobe about this problem? They must look at LR we can't solve this problem ourself as it is a software issue.

I'm having this same issue! Once the file showed up corrupted in lightroom, when I opened it in Raw it had the same banding. I unfortunately didn't back up the images so I'm scrambling. I went to Photoshop and am processing the images to PSD files to get them out of raw and it seemed to have worked, I'll see once it's done. I'll try the above suggestion about updating the metadata to see if that works. Crossing my fingers, if it doesn't work, then I'm not using LR again until I hear it's fixed. :/

It's really weird, but I keep having this issue, and it's terrifying that it will happen to me after I've deleted all the pictures from my memory card, I really hope Adobe does something about it. Here it's the exact same image after being imported to LR and in the back up drive, exact same file, from exact same CF card. It's really anoying

I've had the same problem with importing DNG's from a Mavic Pro into Lightroom using a micro SD and micro SD card reader. Stripes across the image. It is definitely NOT a hardware issue contrary to the patronising posts above. I know this because jpeg's produced by the mavic at the same time using the same input device are not affected when importing into Lightroom. Also if the DNG files are copied onto the hard drive first and then imported from there into Lightroom there are no stripes and no problem. It is definitely something that Lightroom import is doing to the Raw files direct from the card. This was not a problem until recently (using the same hardware) so I imagine it may be to do with a recent Lightroom update. 

So at the moment I'll have to use the copy to hard drive first work around. Hopefully it will be sorted in time. Beware though that any attempt to import directly into lightroom when you have this problem permanently stripes my images, even if I subsequently try the work around. N.B I shoot Canon as well and there's no problem with those files.

Been having the same trouble with my Sony A7Rii importing through Lightroom (on latest model MacBook Pro) and onto a LaCie Hard drive. I'm using an external card reader as there is no internal one on these laptops. If I import using Lightroom I have the lines. I've happily just discovered that if I use finder to copy the files from the SD card to the appropriate location on the LaCie harddrive then import them to the catalogue by adding rather than copying, then no lines. I'm still to experiment with "corrupted" files that exist only on the hard-drive but hoping even these can be moved, deleted then added again without said lines. So seems to be a Lightroom issue?

Have been having the same problem as indicated. PC, D800, D500.  When using Windows Explorer and simply copying and pasting, no problems.   When using View NX2 and Lightroom, problems emerge with apparently random images.

I was brought to this forum via a search for a solution to a similar problem it a batch of photos from a recent location shoot. Background:  At a recent photo shoot several thousand photos taken with a D800. The shoot consisted of several sets. After each set, the full sized NEF were copied from SD to an external SSD via MacBook Pro 2014 using the computers internal SD port and USB3 cable to the external drive. A replacement SD card was placed in the D800 before each new set. Each set was uploaded to a new folder separating them From the other sets. At the location a preview the NEF using Finder revealed no abnormalities. Back home, Lightroom CC is used to process this shoot. Before importing, a new Catslog per set is built and then each set imported. All of the sets imported without incident. All sets were set to export JPEGs for client reviews. They were saved on a second SSD. it was during the upload of JPEGs to a Cloud that I noticed the abnormalities in one set of photos. Almost every photo in that set had color streaks. I went back to the SSD to discover not only the JPEGs with streak the NEF had the same damage too. All the other sets of photos show No signs of damage. This is isolated to only that one set of photos. You should know the abnormalities have different patterns. Some are diagonal. Some are horizontal. The randomness is curious in itself. I cannot rule out the one SD was damaged, incorrectly connected, or other posibiliries. My question are:

1.  How do I begin to repair this batch of files?

2.  Is there any program out there designed to extract repair the embedded JPEG files from the parent NEF.

3.  Is there a program that can repair JPEGs affected by this type of digital corruption?

Thx...