For Pentax, the EXIF only contains a code.  Your software on the PC
translates this to a legible name.  I use IMatch to manage my images,
and whenever I get a new lens, it just displays something like
"Unknown Lens [8,56]" and I have to tell the IMatch author what lens
that corresponds to, and he adds it to the database for the next
release.

PhotoME is good about having an up-to-date lens database, and you can
also use it to see the code that's really in the EXIF.

On Thu, Oct 16, 2008 at 10:05 AM, William Robb <[EMAIL PROTECTED]> wrote:
> A topic from the dorkforum leads me here.
>
> When a lens type is imbedded in the EXIF data, is the lens telling the
> camera what it is in specific terms (IE: DA35mm f/2.8 macro) or is the lens
> sending a trigger value to the camera which then inserts the correct lens
> info from a self contained data base?
>
> Thanks
>
> William Robb
>
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