Originally posted by dadipentak Like the ad says, "Close to prefect."
How close? I heard turbo or speed boosted lenses are sharp in the middle, soft on the edges, and show increased distortion and PF. I've seen some pretty horrible examples of flare (so-called "blue dot").
I wonder how much of the above is due to performance of the main lens, poor coatings, no lens hood? What do users think about performance?
EDIT I just read this post and a few responses. It seems there are significant penalties for the boost:
http://www.dpreview.com/forums/post/52905604
Last edited by audiobomber; 05-19-2014 at 10:03 AM.