peteln's reviews

Sigma 28-300mm f/3.5-6.3 DG Macro

I used Tamron's 18-200 with D200 a lot but bought the Sigma for D3 because it is way cheaper than Tamron's offering. I thought the build quality was as good (or as bad) as the Tamron but I was wrong, the Sigma started to create FEE error from time to time in less than a year after purchase and I need to unlock the aperture ring, turn it a few times and relock it to make it work again. Regarding image quality, the lens is actually rather sharp in its short end, ok at mid-range, but anything slightly off-center will become soft at focal lengths over 200. And the softness is somewhat directional so it's very difficult to correct with any sharpening / refocussing software.