Unknown Lens

[Billy Vervain]

I have a couple of old Sigma lenses which Lightroom doesn't know, so in the metadata I get 'Unknown lens'.

I found an article online about using ExifTool / ExifToolGui / FullMetaExport to create a plugin and writing a script to correct the Lens, LensType and LensModel in the metadata.

Whilst ExifTool & ExifToolGui are still around, FullMetaExport isn't.

So any suggestions for how to fix the metadata, preferably not by editing it for each photo separately?

I'm using a Windows PC and my Lightroom is up-to-date. 

[Ian Lyons]

I've linked to a plugin that should help with adding the lens data https://www.lenstagger.com/#primary and tutorial  https://www.lenstagger.com/documentation/how-to-use-lenstagger/

[Billy Vervain]

Thanks, I'll read that.

[Billy Vervain]

Having installation problems.

I'm using the instructions from: https://www.lenstagger.com/documentation/how-to-install-lenstagger/

I've downloaded & extracted (1), started Lightroom & the plugin manager (2, 3), and followed the steps so I can Add the plugin (4, 5).

However the Plugin won't load. It has a red 'blob' and the Status is 'This plugin is malfunctioning and can not be used.'

I turned on 'Save diagnostic to file', reloaded the plugin and optned the file.  This is the error:

An error occurred while attempting to load this plug-in.
The plug-in description script (Info.lua) is missing.

So no idea what the problem is.

[Billy Vervain]

Argh can't see how to edit my reply!

To add, Exiftool is installed, exiftool.exe is in C:\Windows\System32, and I restarted after copying it there.

[Ian Lyons]

I can't help with Windows. I think it best that you conact the vendor https://www.lenstagger.com/contact/

[Billy Vervain]

I reported it then on closer inspection found the problem. Now I just have to work out how to use it!