Exiv2

Hi,
The Sigma 30mm 1.4 is not recogize correctly (tested with the last exiv2 version) :

exiv2 -pt 1.JPG |grep -i lens
Exif.CanonCs.LensType Short 1 Sigma 15-30mm f/3.5-4.5 EX DG Aspherical
Exif.CanonCs.Lens Short 3 30.0 mm
Exif.Canon.LensModel Ascii 70 30mm

exiftool 1.JPG |grep "Lens ID"
Lens ID : Sigma 30mm f/1.4 EX DC HSM

Information in at canonmn.cpp in the Exiv2 codebase:

{ 169, "Canon EF 17-35mm f/2.8L" 
     }, // 0
        { 169, "Sigma 18-200mm f/3.5-6.3 DC OS" 
     }, // 1
        { 169, "Sigma 15-30mm f/3.5-4.5 EX DG Aspherical" 
     }, // 2
        { 169, "Sigma 18-50mm f/2.8 Macro" 
     }, // 3
        { 169, "Sigma 50mm f/1.4 EX DG HSM" 
     }, // 4
        { 169, "Sigma 85mm f/1.4 EX DG HSM" 
     }, // 5
        { 169, "Sigma 30mm f/1.4 EX DC HSM" 
     }, // 6
        { 169, "Sigma 35mm f/1.4 DG HSM" 
     }, // 7

So the 169 ID is used 8 times, once by Canon (expected), and seven
times by Sigma (wtf were they thinking)...

Exiv2 uses a heuristic to match conflicted lens id's to
names using their focal length's... but it's failing here somehow...

The Bug #854 as the same issue with another lens. ( Sigma 50mm f/1.4 EX DG HSM )