Hi everyone. Im new here.

Always read Brian`s reviews, but actually never saw that "community" button up there at the main page!

Anyway, I have a question for you guys.
The only lens I have which has IS, the 70-200mkII, shows a strange behavior whenever IS is turned on: it takes slightly soft pictures. Sometimes, they would probably be softer without the stabilization (when using shutter speeds well bellow 1/200, at 200mm for an example) but when I`m around 1/200 or a little faster, I get much sharper shots with IS turned off. I rarely get a super sharp shot (around one in ten) with IS on, unless I`m using really high shutter speeds or using flash, which freezes motion. In those situations it is always ultra super sharp.

Could this be a faulty IS unit in my lens? Has anyone seen this before?