By the way, just thought of the Tamron 17-50/2.8, which is apparently an excellent lens optically but lack of IS, FTM andbuild quality. BUT the Tamron is not even half as expensive as the Canon 17-55/2.8 for the same kid of functionality!! That's a big big deal! So I just wonder if the goal is an APS-C lens, why not the Tamron then? It actually appears sharper than the Canon and it has less vignette. (from Bryan's test)


Just my random thoughts, no offence...[]