Sigma 100-400mm for mirrorless

AlanF

Desperately seeking birds
CR Pro
Aug 16, 2012
12,343
22,520
It has 22 elements in 16 groups, including one FLD and four SLD elements. The old version 21 elements in 15 groups, with four SLD elements. Optically the old one was pretty good but with poor IS when it came out. The new one can take a tripod ring, which is a plus over the old. It uses a stepping motor for AF.
 
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