Wrong Entry in Composite field ‘LensID' and 'LensType' for .ARW RAW-Files

[sebkaletta]

For the Zeiss Touit 32mm F1.8 on Sony E-Mount, the composite fields LensID and LensType get the wrong Lens assigned (Zeiss Touit 12mm F2.8) in .ARW-Files.
I tried with exiftool -ver: 13.32, 13.30, 13.29, 13.25, 13.10, 12.00 and 11.90, with same output.

exiftool pathtoimage/DSC12345.ARW | grep Lens

Lens Type                       : E-Mount, T-Mount, Other Lens or no lens
Lens Spec                       : E 32mm F1.8
Lens Zoom Position              : 0%
Lens Mount 2                    : E-mount
Lens Type 3                     : Zeiss Touit 12mm F2.8
Lens E-mount Version            : 1.40
Lens Firmware Version           : Ver.02.001
Lens Mount                      : E-mount
Lens Format                     : APS-C
Lens Type 2                     : Zeiss Touit 12mm F2.8
Lens Spec Features              : E
Lens Info                       : 32mm f/1.8
Lens Model                      : E 32mm F1.8
Lens ID                         : Zeiss Touit 12mm F2.8

As it is not possible to attach an .ARW, I wanted to convert it into a .JPEG, but turns out it is done correctly there 😄

exiftool pathtoimage/DSC12345.JPEG | grep Lens

Lens Info                       : 32mm f/1.8
Lens Model                      : E 32mm F1.8
Lens                            : E 32mm F1.8
Lens ID                         : Zeiss Touit 32mm F1.8

---

Hot fix: I got it working for both .ARW and .JPEG by changing Sony.pm:

49201 => 'Zeiss Touit', #JR (lens firmware Ver.02)
49201.1 => 'Zeiss Touit 12mm F2.8', #JR (lens firmware Ver.02)
49201.2 => 'Zeiss Touit 32mm F1.8', #JR (lens firmware Ver.02)    
49201.3 => 'Zeiss Touit 50mm F2.8', #JR (lens firmware Ver.02)

./exiftool pathtoimage/DSC12345.ARW | grep Lens

Lens Type                       : E-Mount, T-Mount, Other Lens or no lens
Lens Spec                       : E 32mm F1.8
Lens Zoom Position              : 0%
Lens Mount 2                    : E-mount
Lens Type 3                     : Zeiss Touit
Lens E-mount Version            : 1.40
Lens Firmware Version           : Ver.02.001
Lens Mount                      : E-mount
Lens Format                     : APS-C
Lens Type 2                     : Zeiss Touit
Lens Spec Features              : E
Lens Info                       : 32mm f/1.8
Lens Model                      : E 32mm F1.8
Lens ID                         : Zeiss Touit 32mm F1.8

But as the .JPEG gets it right even without that change, I guess I am not fixing the underlying problem (Maybe something to do with Lens Firmware (Version: Ver.02.001 instead of Ver.02)? I couldn't find out where the values like '49201' in %sonyLensTypes2 are derived from). I am not sure if i break something else, and I am not able to test with Touit 12 and Touit 50 myself.

Thank you very much for creating and maintaining such a great project!

[boardhead]

I'm thinking your probably correct about the firmware difference, but let me understand.

You say it works for JPG images with firmware Ver.02? or 02.001?

• Phil

[sebkaletta]

It is the same image, however when converting from .ARW to .jpeg in MacOS, the Lens Firmware Version tag seems to get dropped:

exiftool pathtoimage/DSC12345.jpeg | grep Lens

Lens Info                       : 32mm f/1.8
Lens Model                      : E 32mm F1.8
Lens                            : E 32mm F1.8
Lens ID                         : Zeiss Touit 32mm F1.8

I just tried to export from .ARW to .JPG with Sonys proprietary application, the Lens Firmware Version tag is kept there (and the wrong Lens Type/LensID gets assigned):
exiftool pathtoimage/DSC12345.JPG | grep Lens

Lens Mount                      : E-mount
Lens Format                     : APS-C
Lens Type 2                     : Zeiss Touit 12mm F2.8
Lens Spec Features              : E
Lens Zoom Position              : 0%
Lens Mount 2                    : E-mount
Lens Type 3                     : Zeiss Touit 12mm F2.8
Lens E-mount Version            : 1.40
Lens Firmware Version           : Ver.02.001
Lens Type                       : E-Mount, T-Mount, Other Lens or no lens
Lens Spec                       : E 32mm F1.8
Lens Info                       : 32mm f/1.8
Lens Model                      : E 32mm F1.8
Lens ID                         : Zeiss Touit 12mm F2.8 

So:

• Original File: .ARW, Original Lens Metadata -> wrong LensID
• Original File converted with MacOS: .jpeg, only Lens Info, Lens Model, Lens, Lens ID as Lens Metadata -> correct LensID
• Original File converted with Sony Imaging Edge: .JPG, Original Lens Metadata -> wrong LensID

Files used: https://drive.google.com/drive/folders/1InMHv7uPA11BCJfHpoPdVewWgF-BSdnf?usp=share_link

[StarGeekSpaceNerd]

however when converting from .ARW to .jpeg in MacOS, the Lens Firmware Version tag seems to get dropped

All MakerNotes metadata has been dropped from DSC12345.jpeg. It's probably not the best way to convert any file if the metadata is important.

[sebkaletta]

@StarGeekSpaceNerd That's true, but the .jpeg conversion was just a tool to show that the LensID seems to be more accurate with less information in this case.

I think either the code 49202 in %sonyLensTypes2 in Sony.pm isn't correct, or there is another (not yet implemented) code for the Lens Firmware Version: Ver.02.001 (instead Ver.02).
Sadly, I'm not as much into Perl and MakerNotes to exactly understand why it gets wrongly assigned 49201.

Changing this in Sony.pm %sonyLensTypes2 made it work for me:

49201 => 'Zeiss Touit', #JR (lens firmware Ver.02)
49201.1 => 'Zeiss Touit 12mm F2.8', #JR (lens firmware Ver.02)
49201.2 => 'Zeiss Touit 32mm F1.8', #JR (lens firmware Ver.02)    
49201.3 => 'Zeiss Touit 50mm F2.8', #JR (lens firmware Ver.02)

[boardhead]

The decimals are an invention of mine, and not part of the stored lens ID. So if you are correct then all 3 of these lenses have the same ID. I'll implement this and we'll see how it goes.

• Phil

[sebkaletta]

Alright! Touit 12mm had 49201 assigned, Touit 32mm is verified 49201 from my images. That the 50mm then also has 49201 is a guess by me.
I'll try to find out-of-camera images from the E-mount 12mm and 50mm somewhere to verify those stored lens IDs.

Thanks a lot!

[boardhead]

13.33 is now available with this update.