There were several versions (at least 2 anyway) - the EX ones are pretty good, but before that less so. You need to check that the rear element of your lens will not crash into the front element of the convertor as it stands proud of the housing. Sigma have a compatibility table on their website for their own lenses.
> -----Original Message----- > From: Andre Langevin [mailto:[EMAIL PROTECTED] > Sent: 11 October 2004 16:27 > To: [EMAIL PROTECTED] > Subject: Sigma AF 1.4X worth considering? > > > Good optics? Is it also compatible with MF lenses? > > Andre > >
