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03-07-2019, 03:38 AM - 1 Like   #1
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Sigma 24-70 2.8 EX DG HSM

Morning,

Doesn't seem that there's a thread for this one. Checked the archives and I'm absolutely certain nobody has sample photos of this lens.

So here are two of mine.



And


03-07-2019, 06:28 AM   #2
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Took this early today with the 24-70mm EX DG aboard my K-1 as I was contemplating breakfast and saw this new thread. thought I'd jump on early.

What is odd is the EXIF data comes up as several different SIGMA lenses. Does anyone else have that issue with SIGMA?
Attached Images
View Picture EXIF
PENTAX K-1  Photo 

Last edited by Merv-O; 03-07-2019 at 06:31 AM. Reason: Add photo data
03-07-2019, 06:53 AM   #3
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K-1 w/ 24-70mm EX DG

Once again, the EXIF data comes out distorted on this lens...(2nd photo I took was with another camera to prove the 24-70mmEX DG is on the K-1)
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View Picture EXIF
PENTAX K-1  Photo 
View Picture EXIF
D-LUX (Typ 109)  Photo 
03-07-2019, 07:26 AM   #4
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QuoteOriginally posted by Merv-O Quote
What is odd is the EXIF data comes up as several different SIGMA lenses. Does anyone else have that issue with SIGMA?
That's a common problem with Sigma lenses and some software. The only identifying data actually recorded in the EXIF is an ID number. The software guesses the lens based on the ID number and focal length. If Sigma used the same ID number in more than one lens and the focal length changes, the software may change its guess.

03-07-2019, 07:47 AM   #5
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QuoteOriginally posted by THoog Quote
That's a common problem with Sigma lenses and some software. The only identifying data actually recorded in the EXIF is an ID number. The software guesses the lens based on the ID number and focal length. If Sigma used the same ID number in more than one lens and the focal length changes, the software may change its guess.
TH: That makes sense because every other after market lens I use (including Tamron, Leica and Vivitar) shows the lens focal length at a minimum. The thing is over time you forget which SIGMA you utilized (I have several--their auto drive in the lenses are generally very quiet and fast). Oh well, it gives you incentive to try the lot I guess.

Thanks for taking the time to explain the phenomena.
03-07-2019, 08:25 AM   #6
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QuoteOriginally posted by Merv-O Quote
Took this early today with the 24-70mm EX DG aboard my K-1 as I was contemplating breakfast and saw this new thread. thought I'd jump on early.

What is odd is the EXIF data comes up as several different SIGMA lenses. Does anyone else have that issue with SIGMA?
Absolutely mine identifies on Flickr as a Sigma 70-200 2.8.

And folks complain about the Bokeh on it but I like mine.
03-09-2019, 05:37 AM   #7
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its a lovely lens. I sold mine to fund for the sigma 35mm f1.4 art. here are some old photos with the 24-70 :





03-10-2019, 07:58 PM   #8
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It is a great lens.Sharp and the Bokeh is decent. On the K-1 it needs little correction. It only cost me $150.00 gently used. A bargain...


Last edited by Merv-O; 03-10-2019 at 07:59 PM. Reason: typo
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