I have no issues converting a D7200 NEF to DNG using DNG Converter 9.4x548 on El Capitan.
Did you import the NEF files directly from the memory card, or did you use a utility like Nikon Transfer?
If the latter, there are known file corruption issues, so try importing directly from the memory card to see if that helps.
You can also post a sample image to DropBox and include a link here for troubleshooting purposes.
Hi. That's good news to know that other's don't have this problem. I have copied the files directly over from the SD card using a card reader and then dragged them onto my hard disk. Unfortunately I don't use Dropbox - is there another way of sharing this file with you?
You have mail...
Got it. Thanks!
I was able to convert your NEF to DNG without issue and it shows a thumbnail in the Finder.
I'm beginning to wonder if there is something amiss with your OS and/or with Aperture.
One way to eliminate the DNG Converter is for you to send me a DNG you are unable to open (same ZIP strategy as before).
If that works on my end, it my an OS/Aperture issue.
First confirm that your El Capitan install is patched to the current release (10.11.3).
Then you might try creating a new test catalog in Aperture and see if one of these DNGs will load OK there.
Finally, try searching for the errors you posted above. It's possible someone else has run into this.
Hope this helps!
I've had another play around with the settings of the DN Converter and have found that changing the compatibility setting to 6.6 and later (or 7.1 and later) and ALSO checking the Use Lossy Compression generates a DNG file that produces a file that the OS can read in quick view and Aperture can read.
The error issue seems to arise when I choose NOT to use any form of lossy compression (i.e. leave the option unchecked).
You shouldn't have to use lossy compression in order to view the DNG in the Finder. I'm not sure about Aperture, but it would surprise me if that was a requirement.
If you want to send me a DNG that is not working for you I can at least confirm the issue is repeatable and maybe offer more clues to solving this on your end.
Following up. The issue appears to be a bug in El Capitan, so we are working with Apple to confirm/resolve it. No ETA on a fix for now.
Greetings, When I convert a NEF file from the Nikon D750 to DNG using Lightroom some applications will not open the DNG, but the same file in its native format NEF can be opened. The files from my D300s when converted to DNG do open in other applications ....... perhaps that is a clue:)
This came from an Adobe forum............."Try using the adobe dng converter with the Compatibility set to Custom>Linear and see if that works"................and it worked!!!!!! However Lightroom does not allow for this.
None of the native apps on an updated Mac including the app Preview would open the DNG conversion, in fact Preview crashed