11-22-2022 07:52 AM
Hi all,
Ever since I got my Canon R6, Flickr won't display lensmaker information in case 3rd party lenses 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, 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...
Does anyone experience the same issue and maybe have a solution, or must the solution indeed come from Canon?
Solved! Go to Solution.
11-25-2022 10:07 AM - edited 11-25-2022 10:40 AM
Seems the only thing that tells us that this is Carl Zeiss Apo-Sonnar T* 135mm f/2 ZE is the LensType nr. Exiv2 has a few lenses in the database at LensType nr 33. It seems like Canon didn't use nr 33 at all.
Only one is 135mm, so it is easy for exiv2 to pick the right lens. I didn't need to use its configuration file.
As an explanation to the printscreen below, when using -pv instead of -pt exiv2 will show the LensType nr instead of the name in its database. "Ej tillgängligt" is in English "not available", so it has no meaning in this case.
darktable uses exiv2 for lens identification.
As for your original question, this is possible for Adobe to solve, but I wouldn't hold my breath.
I don't know why Adobe is able to pick the right lens for 6D.
11-25-2022 11:47 AM
I sometimes use an adapted 45 year old lens from a Minolta film camera on my Canon camera and I do this to put the lens information into the image files:
exiftool -LensModel='Minolta MC ROKKOR-X PG 1:1.4 f=50mm' IMG_982[0-2]*.JPG
exiftool -FocalLength='50' IMG_982[0-2]c.JPG
exiftool -LensSerialNumber='3835202' IMG_982[0-2]*.JPG
I expect something similar could be done with the exiftool GUI.
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