Irix 15mm f/2.4

[kaktus]

Hi,
The issue is that the camera keeps in the metadata that the target is irix 11mm (But it's actually the irix 15mm.) and when I edit (in my case at Darktable) does not apply the proper geometrical corrections because it does not identify the target well.

The lens is presented as 11mm f/4 to the camera.

I have lowered the correction profiles for Adobe that IRIX has hung on its web (https://irixlens.com/support/), I have lowered the profiles for 11mm and 15mm, I have opened them with a text editor and it turns out that IRIX uses the same target identifier in Canon frame:

IRIX 11mm profile extract, in bold the target identifier code:

 ...
<stCamera:Make>Canon</stCamera:Make>
<stCamera:Lens>11mm</stCamera:Lens>
<stCamera:LensID>60</stCamera:LensID>
<stCamera:LensInfo>11/1 11/1 0/0 0/0</stCamera:LensInfo>
<stCamera:FocalLength>11.000000</stCamera:FocalLength>
...

IRIX 15mm profile extract, in bold the target identifier code:

...
<stCamera:Make>Canon</stCamera:Make>
<stCamera:Lens>15mm</stCamera:Lens>
<stCamera:LensID>60</stCamera:LensID>
<stCamera:LensInfo>15/1 15/1 0/0 0/0</stCamera:LensInfo>
<stCamera:FocalLength>15.000000</stCamera:FocalLength>
...

As you can see, both profiles use the same target identifier, a full-fledged veneer, which means that both targets are presented in this way to the camera and recorded in EXIF.

What if you do both goals is pass the right focal length data.

In case of doubt I went to the page of the Exiftool project, they have a list of all objective identifiers (https://exiftool.org/TagNames/Canon.html#LensType).

Well, as confirmed, ID 60 corresponds to IRIX 11mm f/4, a second entry for IRIX 15mm f/2.4 would be missing.

Is there a way to fix this?
Thank you very much in advance.
And I apologize if my use of language has not been appropriate, I had to use the translator because my English level is very bad.

Greetings

[Phil Harvey]

If the ID's are the same, the software should be able to distinguish them by looking at the focal length (assuming that is correctly stored), but you'll have to submit a report (and a sample) to Darktable for this.  Could you also send me an original image from the 15mm so I can add support in ExifTool?  (philharvey66 at gmail.com)

- Phil

[Phil Harvey]

I got the sample, thanks.  ExifTool 12.77 will identify this lens properly with the LensID tag.

- Phil