ExifTool Forum

[Originally posted by msbc on 2008-10-30 20:58:00-07]

Phil,

In the Tags documentation under Composite Tags there is a note for the LensID tag that reads:

May be configured by adding user-defined lenses

Can you explain how this can be done? I'd like to add my manual focus lenses - Contax and Leica - that I use on my 5D.

[Originally posted by exiftool on 2008-10-30 21:42:20-07]

Currently the option is rather limited, and is used only to
select the correct lens from the list of known alternatives when
there is more than one possible lens for a given LensType
value.  ie) If there is an "or" in the lenstype value.

 What
does the LensType tag show for these lenses?  If you have
any lenses that give "Unknown(##)" values (where ## is anything
but 0 or -1), then I should add these to the distribution.

- Phil

[Originally posted by exiftool on 2008-10-30 21:45:09-07]

Oh.  I forgot to answer your question about how it is
done.  An example is given in the
config
file documentation at the bottom of the page.

[Originally posted by msbc on 2008-10-31 03:58:50-07]

Phil,

On a related note - I've tried to change the LensType value in a Canon 5D CR2. The Tags documentation show this tag should be writable but my image file is not updated when I attempt to change this value?

Thanks,

Mark

[Originally posted by exiftool on 2008-10-31 11:31:21-07]

Hi Mark,

Thanks for pointing out this problem.   It turns out that you couldn't
write any tag in the CanonCameraInfo5D structure.
This will be fixed in the next release.

- Phil

[Originally posted by msbc on 2008-11-06 03:23:47-08]

Phil,

I just tried the new 7.52 version but am still seeing the same problem.

Mark

[Originally posted by exiftool on 2008-11-06 11:41:21-08]

Could you please paste a console log showing your
exact problem.  This works for me:


- Phil

[Originally posted by msbc on 2008-11-06 12:24:17-08]

Phil,

Just to clarify:

1. I'm testing against a 5D CR2, not JPG

2. According to your Tags documentation LensType (Index 22) is int16s - so I am entering the following command:

[Originally posted by exiftool on 2008-11-06 12:33:59-08]

Ah, OK.  This is FAQ
number 6.

It should work for JPEG or CR2.

- Phil

[Originally posted by exiftool on 2008-11-06 12:39:47-08]

Also, you can save a bit of typing:  The
-s option has no effect when writing.

- Phil