D7200 NEF Problem (actually JPGs affected also)
I was scrolling through some recent shots using first Windows Photo Viewer and then Windows 10 Photos. I noticed in Windows Explorer that some of the NEF files didn't show a thumbnail and for those files I got the following messages:
"Windows Photo Viewer can't open this picture because the file appears to be damaged, corrupted, or is too large."
"It looks like we don't support this file format."
27 out of 96 shots were affected. I shot with three different lenses and images from two of them were affected. Three different focal lengths with my Nikon AF-S VR 70-300mm f/4.5-5.6G IF-ED and also with my Tamron SP 90mm F/2.8 Di Macro 272EN. No shots taken with my Nikon 50mm f/1.4D were affected, but the problem had stopped occurring with the Tamron by the time I started using that lens.
I used a card reader to copy the files to my computer via a USB-2 port (my computer is older than USB-3). When I noticed the problem, I put the card back in the reader to see if the files on the card were corrupt and they are. I didn't expect anything different if I left the card in the camera and used the cable to review the files in Windows Explorer, but I do see thumbnails for the NEF files this way. Also, when I check properties/details I do see a pixel count. I noticed on the thumbnails for both the JPG and NEF files that there is a wider black band at the top and bottom of photos with the problem. In addition, the pixel count of the unaffected NEF files are 6000 x 4000 as expected and 6000 x 3368 for the affected files. I haven't checked them all. I copied the files from the card via the cable to a different directory and the NEF files are again unreadable. I kind of expected that. I haven't tried with Lightroom yet.
Another curiosity, The affected photos actually span 28 shots. The problem went away for one shot. Weird. So, if I can't find a program to accept these raw files I guess I am stuck with the JPGs. Paranoia occasionally pays off. These weren't photos of anything special, but I am concerned about my camera. I had the second card set up as overflow since I'm just shooting for fun, but I suppose the next thing to do is to set it up to duplicate. I'm unlikely to fill one 32 GB card let alone two.
But, I really would like to see if anyone has seen this issue or if anyone has an idea of what has happened. I guess I have ruled out the card reader and cable. It could be the card or camera I suppose. I have removed the card from the camera a few times and I didn't format each time. Or maybe it was just the phase of the moon? Was Jupiter aligned with Mars?
Thanks for any suggestions.