Sigma 300-600mm f/4 DG OS will be available on 16 May instead of 22 April Andreapazzo 8 months ago Sigma has delayed the shipment start of the new 300-600mm f/4.0 lens from April 22 to May 16 – 300-600mm preorders at BHphoto. Amazon. Adorama. FotoErhardt. Fotokoch. WexUK.
