Exif data post-processing for uncoded lenses

[01maciel]

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Most of my lenses do not have a lens code, so I have to adjust the Exif data accordingly afterwards. I try to do this very carefully so that I know later on under what conditions I took the photo. I post-process the Exif data using a shell script in which I have entered the data for the lens used. One script for each lens. This is not only unattractive, but also very static and somewhat manual.
Now I've written myself a little GUI that does the whole thing with just a few clicks. The procedure is kept quite simple:

• Select the directory with raw files.
• The raw files are then displayed on the left-hand side. 
• Select files.
• The Exif data for the last file clicked is displayed at the bottom left.
• On the right-hand side, simply select the lens you actually used and click on it.
• The Exif data associated with the lens you actually used is displayed at the bottom right. This data is read from a database and does not need to be entered manually.
• Then simply click on the “Write Exif” button and the data will be written to the previously selected raw files. Done.

Is anything missing? Could more Exif data be written? But what? If you have any ideas, please let me know.

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[RoySmith]

Well done. Does your shell script make use of ExifTools by Phil Harvey? 
i don’t use my M9 much anymore, but programs like this are very useful for uncoded lenses.

[KFo]

Wow, this is great!!!  I probably do what you used to do using EXIFtool.  Here is my typical for a non-coded lens.

35 Summicron 8 element

exiftool
"-lensinfo=35mm f/2.0"
"-lensmodel=Summicron 1:2.0/35 8 Element"
"-lensinfo=35mm f/2.0"
"-lensserialnumber=23140zz"
"-focallength=35.0 mm"
"-lensmake=Leitz Wetzlar"
"-Make=Leica"
"-Model=M3"
"-BodySerialNumber=11550zz"

You might note my non-standard descriptions in various fields...

Edited 13 hours ago by KFo

[01maciel]

vor 7 Stunden schrieb RoySmith:

Does your shell script make use of ExifTools by Phil Harvey? 

Yes it does. It is the one and only for organising EXIF data. So, the GUI is more of a wrapper with a database connection for the details. Since I implemented it in Python, it also runs on all known OS incl. Windows.

 

vor 4 Stunden schrieb KFo:

 I probably do what you used to do using EXIFtool.  Here is my typical for a non-coded lens.

Looks good and pretty much what I used to do. I have shell script using exiftool. 

E.g. Summaron f=3.5cm

#!/bin/sh
LModel_New="Leitz Summaron f=3.5cm 1:3.5 LTM"
LMake_New="Ernst Leitz GmbH Wetzlar"
LInfo_New="3.5cm f/3.5"
MaxAp_New="3.5"
i=1     ##
countDNG=`ls -1 *DNG | wc -l`     ##

for thefile in *DNG; do
    echo -en "\015\033[K$i of $countDNG"     ##
    exiftool -q -q -m -LensModel="$LModel_New" $myfile \
    -LensMake="$LMake_New" $thefile \
    -LensInfo="$LInfo_New" $thefile -MaxApertureValue="$MaxAp_New" $thefile  "-FileModifyDate<DateTimeOriginal" "-FileModifyDate<CreateDate" $thefile \
    -FLength=35.0mm \
    -FocalLength=35.0mm -Lens=35.0mm -minFocalLength=35 -maxFocalLength=35
    ((i++))     ##
done
echo     ##
echo "Meta data of $i files changed to $LModel_New"     ##
#rm -f *_original