Hi everyone, new user on the forums, I’ve been having fun exploring this software and already started teaching it to some fellow photographers whenever I can help them.
I’m currently having an issue though, inspired by a number of threads on failed lens recognition I thought about bringing my case forward to avoid the risk of going OT in other discussions.
The lens I’m having issues with is the “Tamron 18-200 mm F/3.5-6.3 Di II VC” and I have a recognition issue which was (supposedly) solved in v 0.28.3 of Exiv2.
This lens, oddly enough, is the only one which does not feature the brand name in the supported Tamron lenses list. It also has AF as part of the nomenclature which isn’t specified on the official website, on lensfun’s list, neither in the exif data but appears like this on dt.
It seems like there might be some confusion, should I be worried? Could it be leading to errors in the recognition other than the aforementioned behaviour solved in Exiv2’s update? I even thought I could be completely wrong, and that it isn’t the same lens, but there’s nothing really similar after doing some researches.
This is how it appears on dt 4.8.0 on Windows:
This is how it appears on lensfun’s list:
This is what it looks like in ExifToolGUI
Right now Exiv2’s lib featured in dt 4.8.0 uses LensType instead of LensModel to determine the lens which results in wrong reading for third party lenses on Canon as stated in the discussions over GitHub where they discussed the update.
It seems like the problem is solved, and I was curious to verify if it’d help me.
I already tried the suggested “Exiv2.ini” method, which at first seemed to solve the issue but, alas, it results in a “lens not found” in every way I write it. Otherwise, could it be because of some errors in the LensModel name that mess up the recognition? In the exif data the name seems to have an error as in Di II being attached, it turns out like this: “TAMRON 18-200mm F/3.5-6.3 DiII VC B018”.
Otherwise, I was wondering if a non-linux user could “build” a version of dt with the updated Exiv2 library to test if it fixed this lens in my case or if a solution is to be found elsewhere.
Sorry for the lengthy thread, I wanted to clarify as much as possible, and I’m ready to provide EXIFs or RAWs if need be.