05-23-2013, 01:18 PM
The current 50-150/2.8 OS is large enough, the size of the 70-200/2.8!
Quote:I can see some appeal for this lens, e.g. astrophotography.
To me this lens is interesting because it breaks the f/2.8 zoom lens barrier. Sigma, how about a 50-135/1.8
and how about a 16/1.4 while you're at it? Please....