Review of the Sigma 70-300mm DG Macro lens
The trouble with this lens is that it tries to do too much: it's very versatile but it doesn't shine in any department. It offers so much that it cannot possibly meet all of its promises at such a low price-point. Its resolution figures start low and never climb as high as other comparable lenses either and its crucial 300mm performance is particularly poor. The lens is also hard to handle given its considerable extension and the fact that its barrel rotates during focusing.