All of my picture is not sharp(blur).Is my lens got problem? What can i do with my lens ?It still under warranty.Do i need to buy new lens? What are the lens i should buy?
its a user problem (yourself).
nothing to do with your lens.
the way u use your lens and camera is wrong.
i suggest u join some outings here and learn from others.
http://www.clubsnap.com/forums/forumdisplay.php?f=49