Originally posted by Chuck Lee marq,
Someone please correct me if I'm wrong, but I don't believe the Tamron is available yet and according to the Sigma web site their 70-200 is only available for C, N, & Sigma mounts.
Chuck
I don't know if this counts as you being wrong, but I have a Sigma 70-200mm F2.8 APO - DG plus the matcvhing 1.4x TC that I bought in early 2004 (for use on my *istD). I don't know if the availability issue is just that it is out of production at the moment, or discontinued.
Great lens for concerts and stage lighting, and fast.
Depending on distance, and lighting, you may also want to pack a 50mm F1.4
Note also that 6 MP bodies may be better due to ISO 3200 capability