Zeiss Planar T* 50mm f/1.4 ZE wasn't recognized in EXIF

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  • Updated 7 years ago
Zeiss Planar T* 50mm f/1.4 ZE (attached with Canon 60D (firmware 1.0.9)) wasn't recognized after importing the image files.
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Qingyu Zhou

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Posted 7 years ago

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Eric Chan, Camera Raw Engineer

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Which version of ACR are you using? All the Zeiss SLR lenses except for the recent 2/25 and 1.4/35 should be recognized and identified in ACR 6.6 (latest version).

Can you please provide an example raw file? Feel free to send to me at madmanchan2000@yahoo.com (dropbox, yousendit.com, etc.).
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Qingyu Zhou

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If it's Camera Raw you were talking about, it's 6.6, comes with Lightroom 3.6. I checked the version before reporting this issue, and be surprised that it already supports this lens. So I was confused then, but I have no required knowledge to investigate the raw file by my own. And I am glad you guys can help me with that. The raw file has been shared to your dropbox account.
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Eric Chan, Camera Raw Engineer

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I discovered the reason for this. We do have logic in ACR 6.6 to correctly identify this lens by name (e.g., it should be reported as "Zeiss Makro-Planar T* 2/50 ZE"). However, there is a piece of conflicting metadata in this case that prevents this. Namely, the maximum aperture value should be 2, but the camera/lens combination reports this as 1. (i.e., it is reported in metadata as a 50 mm f/1 lens, which is why the ACR 6 logic thinks it is not the Zeiss 50 f/2 lens). I don't know why this particular camera/lens combo reports as 50 f/1. I've tried this lens on other Canon bodies (e.g., 7D, 5D II) and it correctly reports as 50 f/2.
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Qingyu Zhou

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Thanks for reasoning. But just in case, this lens is Zeiss Planar T* 50mm f/1.4 ZE (not a Makro, and the maximum aperture is f/1.4, not f/2). To compare, here are the links for each:
50mm f/1.4 - http://goo.gl/zWIxL
50mm f/2 (Makro) - http://goo.gl/t4BPy
Hope that would help the logic.
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Eric Chan, Camera Raw Engineer

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This will be fixed in the next release; thanks for your help.

(I had a more detailed answer, but unfortunately it seems the forum may not have preserved it.)
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Qingyu Zhou

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Looking forward to the release then!