Nikon TC-17e II reporting focal length incorrectly

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N8sphoto New Member • Posts: 12
Nikon TC-17e II reporting focal length incorrectly

Hello all,

I recently acquired a Nikon TC-17e II mainly for use with my Nikon AF-S Nikkor 300mm f/2.8 ED.
Autofocus and everything works great, but it is reporting the metadata for focal length incorrectly.
Aperature, ISO, shutter speed etc is all fine, but the recorded focal length is 700mm. I'm using a 300mm x 1.7 = 510mm obviously a bit off from 700.
I have looked all around and can't find anything on correcting this. Is this a firmware update correction? Help would be appreciated.

 N8sphoto's gear list:N8sphoto's gear list
Nikon D810 Nikon AF Fisheye-Nikkor 16mm f/2.8D Nikon AF Nikkor 50mm f/1.4D Nikon AF-S Nikkor 50mm F1.8G +1 more
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