Steve, Is this a old Sigma lens or a new one? In other words, has it's chip been upgraded to suit D10? I read on various newsgroups that Sigma does this upgrade free of charge and it takes about a week for lens to be returned to you. Call Sigma at (631) 585-1144 for more info. hope this helps, Achal > > I have a D10 with a Sigma 28-70 EX ASP lens and I seem to have a problem > with the focus. Used fully auto (with a 550ex flash) on 70mm, shooting > close to a small subject, the cameras confirms that it has focused but
