Looking for a luminous lens kit? Choose Tamron or Sigma!

Tamron 17-55mm F/2.8 VC versus Sigma 17-55mm F2.8 OSSpeaking of the Sigma and Tamron 17-50mm lenses, here are some interesting comparisons:Sigma and Tamron 17-50mm for Nikon lenses comparison with Nikkor 17-55mm f/2.8G on a Nikon D7000Sigma and Tamron 17-50mm for Canon lenses comparison with the Canon 17-55mm f/2.8 on a Canon EOS 7DThe results for both the Tamron and Sigma models are very similar, with the Sigma only very slightly better than the Tamron over the entire focal range. Of greater note is that both lenses are exceptionally good when compared to the Nikon 17-55mm and the