I saw one of these on Ebay, found it novel, and started looking for more info on them. BHPhoto shows them as available new! Opinions on them sound mixed, but for a relatively normal to 200mm superzoom it looks like a small and light package. Thoughts? Tamron 28-200mm f/3.8-5.6 LD Aspherical IF Super MFA17-200 B&H Also, does anyone use an adaptall to u4/3 adapter? Any one in particular good? Any one to avoid?