Show complete Lens name in About Photo

[sat3ll]

Detailed description of the problem

Instead of, for example, 24mm f/1.8, it should show AF-S Nikkor 24mm f/1.8G ED (ExifTool -LensID tag) when using system ExifTool.

Output of the diagnostics (Settings => Diagnostics)

Diagnostics
-----------
Warning: Dropbox import not working. No property for dropboxKey.
Error: Upgrade to PHP 7.1 or higher


System Information
------------------
Lychee Version (json):  3.2.13
DB Version:             update_030213
System:                 Linux
PHP Version:            7
MySQL Version:          50505
Imagick:                1
Imagick Active:         1
Imagick Version:        1687
GD Version:             2.2.4
Plugins:                


Config Information
------------------
version:                 update_030213
checkForUpdates:         1
sortingPhotos:           ORDER BY id DESC
sortingAlbums:           ORDER BY id DESC
imagick:                 1
lang:                    en
skipDuplicates:          0
layout:                  0
image_overlay:           1
default_license:         reserved
small_max_width:         0
small_max_height:        360
medium_max_width:        1920
medium_max_height:       1080
deleteImported:          1
image_overlay_type:      desc
php_script_limit:        0
useExiftool:             1

Browser and system

Firefox 66, x86_64 Linux

[mir07]

Unfortunately the LensID tag is only available in the RAW file and not in the JPEG file. Some minor improvement seems to be available in the LensSpec tag which is available in the JPEG file.
Example with ("LensID" => "Tamron SP AF 150-600mm f/5-6.3 VC USD (A011)"):
Lens: "Lens" => "150-600mm f/5-6.3"
LensSpec: "LensSpec" => "150-600mm f/5-6.3 G VR"

[sat3ll]

Unfortunately the LensID tag is only available in the RAW file and not in the JPEG file.

Not necessarily. At least when exporting from RawTherapee as JPEG, it preserves the LensID tag. If the exported RawTherapee file (in either JPEG or TIF) is then edited with GIMP, this tag is lost (Error: Warning: Can't decrypt Nikon information (no ShutterCount key)).
In both cases the LensSpec tag is available. The logic for this could be to check first if LensID is available, falling back to LensSpec (or original behavior, Lens) if inaccessible.

[mir07]

Seems to be a bug in Darktable and Gimp (which share libraries with Darktable) so I have created a bug report: darktable-org/darktable#2290