-----Original Message----- From: Alan Chan [mailto:[EMAIL PROTECTED] Sent: August 7, 2003 3:04 PM
I think the major concern with the Sigma is that it might not work on future Pentax bodies. It has been known that SIgma have been reverse-engineering people's technology and causing capability problem. Even OEM lenses don't maintain 100% forward compatibility. For instance, M series lenses won't work in shutter priority or full auto on A series or newer bodies. And I have seen some comments about worse compatibility problems with the new *ist because you don't have an "A" lock on older lenses. I doubt a newer Sigmas, especially the EX series, will have any more problems than an FA series lens on new Pentax bodies. Now having said that, if the rumoured new lenses offer image stabilization, that's a horse of a different colour. But there are also rumours that Sigma will offer their 80-400 IS lens in a Pentax mount (currently only available in Nikon, Canon and Sigma mounts) Cheers, Mike.
