Go for IS...if you can afford it, and you shoot without a tripod most of the time. The IS on this lens works incredibly well. At 200mm on a crop body, even with great light you're better off with the IS.


You should also know that the f/4 pretty much limits this lens to outdoor, daytime uses. But the 2.8 is so much heavier and more expensive anyway....





I'll attach a pic of a flamingo at the zoo, handheld at 183mm.


[img]/cfs-file.ashx/__key/CommunityServer.Components.UserFiles/00.00.00.45.77/flamingo.jpg[/img]