Nikon Z exif data.

albertospa

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I ask if any user of Nikon Z knows how to record the focal length of the lens used in the exif data.
The recording happens when we use a NikonZ lens or a lens with FTZ adapter (also with AI lenses as long as setting the lens data in IBIS). In practice with the Leica M / Nikon Z adapter the data entered in the IBIS setting are not shown because the adapter is a simple piece of metal. However, the data entered manually for IBIS should also result in the exif data.
 
I don't own a Nikon Z series, but on Nikon dSLRs there is a setting call “non-CPU lens.” If that menu item still exists on the Z series, you could try it to see if it records EXIF data. I doubt it records much, but it is worth a quick try.
 
I don't own a Nikon Z series, but on Nikon dSLRs there is a setting call “non-CPU lens.” If that menu item still exists on the Z series, you could try it to see if it records EXIF data. I doubt it records much, but it is worth a quick try.


Thanks Larry.
Yes sure. I set the data of non-CPU lenses, but then these are not shown in the exif data.
 
I ran into what I assume is the same issue using old Nikkors on my Df. Even though you set up the non-CPU data for an old manual Nikkor, all the EXIF data is not put into the image metadata. To fix this I created a series of shell and Perl scripts (I am on a Mac) to add the info. I run this set of scripts which copies the files off the SD card and adds the metadata. I then run import in LR.


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Using ExifTool on a raw file, print out all the exif data (for a Canon 5D you get over six A4 pages of listings). It could be that the non-cpu lens info is written to a non-standard field. Of course you can write to the exif data using ExifTool… or if the data is in a non-standard field you can move it to the "correct" field.
 
I don't think that Nikon considers this a bug - it's quite intentional (if completely misguided).

The 1.0 firmware still wrote a part of the exif data, namely the "focal length in 35mm" field, even with dumb adapters. There was a bug (both with FTZ and dumb adapters) that it wrote the focal length divided by 10. Together with the fix for the "/ 10" error they disabled writing the field with dumb adapter in the next firmware version.

So no, there is currently no way to get the focal length data into the EXIF with a dumb adapter. Apparently Nikon does not care about non F-mount lenses (Not even about their own rangefinder Nikkors - very sad).

Given the existence of the Techart TZE-01, I hope that someone will come up with a dandelion-like chip we can add to our dumb adapters to get EXIF data. I consider that rather more likely than Nikon changing their mind about this.
 
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