Lightroom: Sigma wideangle zoom lens incorrectly identified in EXIF data

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  • Updated 3 years ago
  • Not a Problem
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Photoshop Lightroom: Sigma 10-20mm F4-5.6 DC EX lens on Sony SLT A55V wrongly identified in EXIF data in Lightroom and Camera Raw. It is reported as a 28-80mm F3.5-5.6 lens, with no manufacturer. Other Sigma lenses I have are identified correctly.
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Steve Morton

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Posted 7 years ago

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Victoria Bampton - Lightroom Queen, Champion

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Have a look at a JPEG in http://regex.info/exif.cgi and see if the camera's reporting correctly. I'd guess it's probably not, since standardization for lens metadata is very new.
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John Kwon, Employee

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Hi Steve, I want to guess along the same lines as Victoria's comment above and say that the camera may not be reporting the EXIF data correctly. Would you be able to share a few images taken with the Sigma 10-20mm F4-5.6 DC EX lens?
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John Kwon, Employee

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Also, just to add a little more, it is possible to encounter these types of conflicts/errors especially when using third party lenses. Camera bodies frequently use integer-based ID tags to identify lenses, and it can be the case that different versions of a lens carry differing ID tags that are not recognized by a camera. In any case, feel free to email me (johnkwon@adobe.com) a few sample images!
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Steve Morton

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John, Victoria

Thanks for both your comments. Victoria was correct - the EXIF data in the file is wrong. Whether the lens is reporting the wrong ID to the camera, or the camera is writing the wrong info into the EXIF file data, I don't know. It isn't a big deal for me - I have identified the correct lens profile manually, so LR corrects the geometric abberations and vignetting properly. It was just that I had the same issue with a Pentax lens on a K10D, that disappeared with a LR upgrade, and so I thought I ought to let someone know about this one too.

The detailed EXIF info display on the web site Victoria gave does identify the lens manufacturer as Minolta/Sony or Sigma, so is half right!

Thanks again

Steve
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blonkster

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Hi,

I know this is an old thread, but I've just bought the same lens for my Sony A57 (Firmware 1.04), and the EXIF is wrong- 28-80mm F3.5-5.6 lens.

I've contacted Sigma to see if they have any advice, maybe the lens can be rechipped, or the camera may not be able to read the data correctly. Either way its a but of a pain when filtering by lens in Lightroom.