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?
1 ACCEPTED SOLUTION
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.
@johnrmoyerwrote:Sometimes in some fields my Canon lens is identified as a Tamron. does in fact know what lens is attached.
Because LensType tag is a number and not written in plain language. Tamron/Sigma use the same numbers. Your LensType nr should be 749 but I am not sure because below it says 2x (and 2x II because they share the same optics). Not 2x III.
Without extender your LensType nr is 747
Because I know darktable and because it is possible to read the source code I can tell you that darktable starts with:
- Exif.CanonCs.LensType
- Exif.Canon.LensModel
- Exif.Photo.LensModel
Some problems with this will be:
- when Canon uses the same LensType for different lenses (75-300, 75-300 II and 75-300 III) or for different combinations (300/2.8L IS USM, 300/2.8L IS USM+1.4x or 300/2.8L IS USM+2x III).
- when third-party makers use the same LensType as Canon.
LensType nr for Canon EF 300/2.8L IS USM is 142. Also 300/2.8L IS USM+1.4x and 300/2.8L IS USM+2x III share the same LensType nr 142.
The solution is to jump to the next tag, Exif.Canon.LensModel, because for my 6D, it has the right lens name and extenders there. But my D30 only has LensType tag and not Exif.Canon.LensModel or Exif.Photo.LensModel and will not give me the right combinations of extenders for this lens...
@Peter, @ Waddizzle
I just took 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 combo's: 6D+canon, 6D+Zeiss, R6+canon
- In DPP 4.16, the lensinfo shows correctly for the following combo's: 6D+canon, R6+canon
- On Flickr, the lensinfo shows correctly for the following combo's: 6D+canon, 6D+Zeiss, R6+canon
At least Lightroom is aligned with Flickr.
My assumption is that DPP 4.16 will be aligned with exif tool. But I have to get ExifTool+ExifGUI working first.
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:
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.
I followed your youtube video and I got EXIFtool working. I don't know if Lightroom uses the same exiv2 as Darktable in order to manipulate it as you did in your video...
Looking at the R6+135 apo image (_IMG.3306.CR3):
EXIF-tab:
Maker-tab, LensType:
Maker-tab, LensModel:
When I check the option SHOW TAG VALUES AS NUMBERS, I see indeed LensType = 33.
But more lenstypes are under 33:
{33, "Voigtlander Ultron 40mm f/2 SLII Aspherical"},
{33, "Voigtlander Color Skopar 20mm f/3.5 SLII Aspherical"}, // 1
{33, "Voigtlander APO-Lanthar 90mm f/3.5 SLII Close Focus"}, // 2
{33, "Carl Zeiss Distagon T* 15mm f/2.8 ZE"}, // 3
{33, "Carl Zeiss Distagon T* 18mm f/3.5 ZE"}, // 4
{33, "Carl Zeiss Distagon T* 21mm f/2.8 ZE"}, // 5
{33, "Carl Zeiss Distagon T* 25mm f/2 ZE"}, // 6
{33, "Carl Zeiss Distagon T* 28mm f/2 ZE"}, // 7
{33, "Carl Zeiss Distagon T* 35mm f/2 ZE"}, // 8
{33, "Carl Zeiss Distagon T* 35mm f/1.4 ZE"}, // 9
{33, "Carl Zeiss Planar T* 50mm f/1.4 ZE"}, // 10
{33, "Carl Zeiss Makro-Planar T* 50mm f/2 ZE"}, // 11
{33, "Carl Zeiss Makro-Planar T* 100mm f/2 ZE"}, // 12
{33, "Carl Zeiss Apo-Sonnar T* 135mm f/2 ZE"}, // 13
Seems like LensTagger LR-plugin is a cumbersome but workable solution:
