if you use the statement

exiftool -n -g1 -w %d%f_tags.txt “$f”

as described above under “Reading All Metadata”, the lens model gets exported, too.

However, the information that is exported depends on the metadata category (Exif, IPTC, XMP, Canon etc.). For one of my shots I find in the EXIF section only:

Lens Info : 24 105 undef undef

In the Canon section, the entry is more specific:

Lens Model : EF24-105mm f/4L IS USM

If you want do dig deeper in the possibilities of exporting certain details of metadata, I suggest you look into the ExifTool examples page:

http://owl.phy.queensu.ca/~phil/exiftool/exiftool_pod.html

Best,
Klaus

Thank you!

For anyone else who may need to separate files with exif data from those without here is a quick way to do it

for f in “$@”
do

exiftool ‘-Directory<DateTimeOriginal' -d Has_Exif "$f"
done

All the files with exif date will be moved to directory Has_Exif and those with out will stay where they were. (you may have to look for the directory. For some reason mine always ends up back in my user directory rather than as sub from where I started. )

Now I can use graphic converter to find all the dups and not worry about deleting the copy with the exif data by mistake.

your script should be slightly adapted:

for f in “$@”
do
exiftool -overwrite_original -Lens=’Rokinon Fisheye 8mm F3.5-22′ -ApertureValue=’8′ -FNumber=’8′ -FocalLength=’8′ -SubjectDistance=’50/100′ “$f”
done

“ApertureValue” and “FNumber” are both indicating your aperture (f-stop). Setting both values may increase your chances to correctly read them in your favourite imaging app.

“FocalLength” is your focal length, i.e. 8mm. It is not the focusing distance!

You will have to add the “SubjectDistance” tag in order to write your focusing distance. The value is given in meters and entered as a fraction (numerator and denominator). In the example above, the distance would be 0.5 m.

Hope this was helpful for you!

Klaus

Example I’ve used:

for f in “$@”
do
exiftool -overwrite_original -Lens=’Rokinon Fisheye 8mm F3.5-22′ -ApertureValue=’8′ -FocalLength=’0.5′ “$f”
done

What I’m doing wrong, notice that the script do it’s work without errors and I have the Phill’s EXIF tool installed without problems, but when read the Exif in Preview, the name of the lens is ok, ApertureValue is ok, FocalLength is ok, but where it say FNumber is 0.
Thank you.
Nuurs

no, this is an Automator variable. The variable “$@” receives the output from the previous action, in the ExifTool examples above this is the filename of the image to be changed.

The for f in "$@" do ... loop makes sure the command is carried out on all files passed from the input.

There’s some information about the variable here.

Hope this helped.

Klaus