Two Sigma 24-70mm f/2.8 IF EX DG HSM lens definitions ??
|Status:||Closed||Start date:||04 Dec 2017|
|Assignee:||Robin Mills||% Done:|
|Category:||lens||Estimated time:||1.00 hour|
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 ????
#1 Updated by Robin Mills 3 months 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 yesLet 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)/