Nikon LensID shows incorrect manufacturer?

[Archive]

[Originally posted by bak37uk on 2009-07-28 15:15:20-07]

I am in the process of incorporating exiftool into my MS Access app to allow me to extract the informaton into my database automatically rather than having to enter it manually.

I have discovered some unexpected LensID values in the Exif data for two of my Nikon lenses:-

Nikon 105mm macro:   "Sigma Macro 105mm F2.8 EX DG"
Nikon 12-24 DX Zoom: "Tokina AT-X 124 AF PRO DX II (AF 12-24mm f/4)"

Is this an error or is it because these Nikon branded lenses are really OEM.
If it is the latter, then why are we paying extra for the Nikon name?

Brian.

[Archive]

[Originally posted by bak37uk on 2009-07-29 05:27:44-07]

Looks like this is a known problem caused by third party manufacturers using the same lens codes as Nikon.

See:- http://www.rottmerhusen.com/objektives/lensid/thirdparty.html

How do I correct this when extracting the LensID from the Exif data?

[Archive]

[Originally posted by exiftool on 2009-08-11 17:23:20-07]

All Nikon lenses should be uniquely idenfied with the exception
of the AF Micro-Nikkor 105mm f/2.8D which can not be distinguished
from the Sigma 105mm f/2.8 EX DG MACRO.  For this lens, the LensID
should show "AF Micro-Nikkor 105mm f/2.8D or Sigma 105mm f/2.8 EX DG MACRO'.
If you don't see this, be sure you are using the most recent version of exiftool.

- Phil