Zeiss lensinfo not present with Canon R6, but present with Canon 6D
Hi all,
Ever since I got my Canon R6, Flickr won't display lens information in case 3rd party lenses (in this case Zeiss) are attached. I see this:
while I see this on Flickr when the picture was taken with a Canon 6D:
Flickr only shows what is present in the file, so I checked Lightroom, and I see that in case of 3rd party lenses (in this case a 135 apo sonnar) that no lensmaker info is shown in Lightroom, only the focal length on the R6:
In case of a picture taken with the 6D, I do see the lensinformation with all my Zeiss lenses:
When I attach Canon lenses (16-35, 70-200, 100-400 etc) to the R6, it works fine:
Flickr:
Lightroom:
So I don't think creating a ticket at Flickr makes sense, since it is already missing in the Lightroom library.
After that, I thought it was Adobe reading the wrong metadata fields from the camera, but I have been using LR for ages, and it doesn't matter which version of LR I use (of course I always keep it up to date), because I don't have this problem when using the 6D.
So the camera seems the only common denominator. I use firmware 1.4.0 on the R6 due to the AF-issues in later versions (hesitant to try 1.6.0). My guess is that Canon does not fill the proper metadata fields in-camera in case of 3rd party lenses. It works perfectly fine when a Canon lens is attached, so the camera does fill metadata fields.
At least the following 2 threads confirm what I have:
and both say it is a Canon bug....With the way Canon is keeping everything close to the chest nowadays, "forbidding" 3rd party lensmakers to use the RF-mount, I would not be surprised if Canon decided not to fill the lensmaker-details in the correct metadata fields in-camera in case the lens is non-Canon....But of course that is speculation...
I've contacted Canon CPS and they say they fill in the lensinformation fields exactly the same way on mirrorless bodies as on DSLR's. They say "EXIF is difficult and we cannot solve this" and they use Canon DPP as "bible" for my issue and they say "if it is not shown in DPP, then we cannot solve it".
In DPP4 it even does not show Zeiss lensinfo with the 6D, while in Lightroom or Flickr it does show Zeiss lensinfo...
Left: 6D + Zeiss 135 apo sonnar (on Flickr and Lightroom show the correct lensinfo)
Middle: R6 + 135 apo sonnar
Right: R6 + EF-100-400 II
I created 4 shots:
1: IMG.3306.CR3: R6 + Zeiss 135 apo sonnar
2: IMG.3307.CR3: R6 + Canon 70-200
3: IMG.3309.CR2: 6D + Zeiss 135 apo sonnar
4: IMG.3308.CR2: 6D + Canon 70-200
See below:
I can conclude the following:
- In Lightroom, the lensinfo shows correctly for the following combos: 6D+canon, 6D+Zeiss, R6+canon
- In DPP 4.16, the lensinfo shows correctly for the following combos: 6D+canon, R6+canon
- On Flickr, the lensinfo shows correctly for the following combos: 6D+canon, 6D+Zeiss, R6+canon
At least Lightroom is aligned with Flickr.
I also checked what I see in-camera (in case of the R6, because the 6D does not show lensinfo when playbacking images).
R6 + Zeiss 135 apo sonnar:
R6 + Canon 70-200:
I've created a topic on the Canon forums and found out that the program Darktable is using EXIV2 (github) for lens identification and there are several tags indicating the correct lensinfo, in this case LensType nr. 33 (33, "Carl Zeiss Apo-Sonnar T* 135mm f/2 ZE") but it is not used by Canon.
Here you see the different tags of my RAW file:
If I was using Darktable, I could manipulate it by a separate .ini file to read out the correct lens identification on tag nr 33.
I don't know if Adobe Lightroom makes use of EXIV2, but in case of the Canon 6D, adobe can read the lens identification correctly as shown in my examples.
Can adobe check the readouts for the correct tags, because it seems Flickr points to Adobe and Canon indicates they will not solve this, so Adobe seems the only party left to fix it....
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