OK, I am about 2 3rds saved for my UWA lens and have been looking at the Sigma 10-20 (a very popilar lens) and the new Tamron SP AF 10-24 UWA lens. I have read the dpreview site reveiw on the Tamron against the sigma and the review ranks it favourable but I have also read a couple of forum threads with not such glowing reports mostly around sharpness although barrell distortion is considered much better controlled on the Tamron.

Have spokem to quite a few others who swear by the sigma but as the Tamron is a realtively new release in comparison I have not spoken to anyone in person who has used the Tamron.

Team, any members out there that have physically compared these to lens.

Thanks, Mike