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One of the cheapest telephoto zoom lenses on the market, the Tamron AF 70-300mm f/4-5.6 Di LD Macro feels like it's built down to a price, with a flimsy feel to it. Optical performance is pretty reasonable through most of the zoom range, but there's a lack of sharpness at 250-300mm.
It has a good telephoto zoom range and it's one of the cheapest lenses on the market.
It comes with a basic feature set and low-budget build quality, along with unimpressive optics at the long end of the zoom range.
The Tamron AF 70-300mm f/4-5.6 Di LD Macro is quite an old design and is now outclassed and outdated by most of the newer competition. It may be cheap, but it's not a particularly good buy.