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Bug #1327

Two Sigma 24-70mm f/2.8 IF EX DG HSM lens definitions ??

Added by Philippe Dussart-Desart almost 4 years ago. Updated almost 4 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Robin Mills
Category:
lens
Target version:
0.27
Start date:
04 Dec 2017
Due date:
% Done:

100%

Estimated time:
1.00 h

Description

Sir,

on your lenses list, I see

Sigma 24-70mm f/2.8 IF EX DG HSM 1.526 yes no no
Sigma 24-70mm f/2.8 IF EX DG HSM 1.005 yes yes yes

It looks like two definitions of the same lens. Which is correct ?

I am using the new Sigma "24-70mm F2.8 DG OS HSM Art" Lens, which is available since May/June 2017 in the US/Europe.
I do not see it on the list.
May be one of the two definitions is related to this new (better) Sigma 24-70 lens ????

Regards, Philippe

History

#1

Updated by Robin Mills almost 4 years ago

  • Category set to lens
  • Status changed from New to Assigned
  • Assignee set to Robin Mills
  • Target version set to 0.27

Can you attach an image for each lens please?

I'm not sure where you've seen: 

Sigma 24-70mm f/2.8 IF EX DG HSM 1.526 yes no no
Sigma 24-70mm f/2.8 IF EX DG HSM 1.005 yes yes yes
Let me explain how lens recognition works.

The camera manufacturer doesn't store the name of the lens in the metadata. He stores a "LensID" in his makernotes. This is an integer. It's common for a manufacturer to use the same "LensID" for more than one lens and Exiv2 has code to inspect other metadata to resolve the ambiguity.

In v0.26, I added a "config" file: ~/.exiv2 into which you can can define the LensID and the Name of the lens. This enables you to define your lens without waiting for a new version exiv2. http://dev.exiv2.org/projects/exiv2/wiki/Lens_Recognition_in_Exiv2_v026_(and_later)/

#2

Updated by Robin Mills almost 4 years ago

  • Status changed from Assigned to Closed
  • % Done changed from 0 to 100
  • Estimated time set to 1.00 h

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