If you like me are undecided between getting the new Tamron 25-200mm and Sigma 20-200mm lenses than check out these reviews:
Tamron 25-200mm – BHphoto, Amazon, Adorama, Fotokoch, Foto Erhardt, Calumet, WexUK.
Sigma 20-200mm – BHphoto, Amazon, Adorama, Fotokoch, Foto Erhardt, Calumet, WexUK.
