« on: February 11, 2015, 05:38:02 PM »
The Sport is what Sigma was going to release when Tamron caught them flat-footed. The Contemporary is a totally different optical design and a totally different lens designed to compete with the low-cost Tamron.
Sigma has said that they are similar optically except that the Sport is better at the edges on full-frame.
The Contemporary is much cheaper and much lighter.
The question for me is, is the 100-400L II + 1.4x TC III worth three times the cost of the Contemporary and 1.5 times the cost of the Sport. For me, the answer is probably "yes" but I'm still uncertain.
Thanks. I've been asking myself the same question and was hoping to see some comparisons at some point. I'd like to try and get into a bit of wildlife stuff and have a bit more reach for some sports although F6.3 is a bit slow for Floodlight stuff. I've been asking myself the same question and was hoping to see some comparisons at some point. I saw a comparison on here I think of the 100-400 i v the ii in terms of optical improvement and it was relatively small given the timespan between the release of the i and the ii. The Sports version is a fair old weight too, considerably more than to 100-400 +tc.