I have both tamron 28-200 & sony 16-105mm (sold off not too long ago).
IMHO, 16-105mm image quality is definitely better than 28-200 or 18-70. It wide angle at 16mm is nice to have in tight situation too. Having said that, though its quality is better than the kit lens or the multi-purpose zoom lens...it is still just a "high end kit lens" which I seldom use after purchasing tamron 17-50mm f2.8.
In the end, after much deliberation...when I travel I'll bring 17-50mm f2.8 (wide enough & ok for low light) & 28-200mm for its zoom capabilities (may upgrade to 18-250 or 18-270 tamron when available).
Hence, I sold off my 16-105 in the end due to its limitations (not fast compared to f2.8 & long as compared to 18-200) though I have no complaints on its overall performance.
just my 2c...
IMHO, 16-105mm image quality is definitely better than 28-200 or 18-70. It wide angle at 16mm is nice to have in tight situation too. Having said that, though its quality is better than the kit lens or the multi-purpose zoom lens...it is still just a "high end kit lens" which I seldom use after purchasing tamron 17-50mm f2.8.
In the end, after much deliberation...when I travel I'll bring 17-50mm f2.8 (wide enough & ok for low light) & 28-200mm for its zoom capabilities (may upgrade to 18-250 or 18-270 tamron when available).
Hence, I sold off my 16-105 in the end due to its limitations (not fast compared to f2.8 & long as compared to 18-200) though I have no complaints on its overall performance.
just my 2c...