As you know Sigma shared only little info about this lens (here at BHphoto). But Sigma France share some more tidbits like construction, size and weight:
- 20 elements in 15 groups (3 Aspherical, 6 FLD, 2SLD)
- 205mm long
- 90,6mm max diameter
- 1335g (1345g for L-mount version)
- Filter size 77mm
Merci beaucoup!
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Thanks to the tipster fro this!