DxO lab just tested the super telephoto zoom lens: Sigma 120-300mm f/2.8 DG OS HSM lens, the Canon EF mount tested on 5D Mark III is scored 29, and the Nikon F mount tested on Nikon D800 is scored 30. According to DxOMark, this is another best zoom lens for full frame DSLR cameras.
Sigma 120-300mm f/2.8 DG OS HSM lens vs other Canon lenses:
Sigma 120-300mm f/2.8 DG OS HSM lens vs Nikon lenses:
Conclusion from DxOMark:
Previous iterations of this lens lacked certain features to compete directly with the premium offerings from the rival marques. But, to their credit Sigma has addressed each shortcoming with the relevant upgrade. While this has increased the price each time, the current $3,600 ticket is still well under what you would currently pay for either the Canon or Nikon 300mm f/2.8 models. Not only that, but it may even save buying a 70-200mm f/2.8 in certain cases. Given the potential savings and the excellent optical performance, the Sigma must be worth a closer look.
|B&H Photo Video||Canon/Nikon/Sigma|