More Sigma 500mm and 15mm lens Youtube reviews Andreapazzo 3 months ago Preorders: 500mm f/5.6 at BHphoto, Amazon, Adorama, FotoErhardt, Calumet, WexUK. 15mm f/1.4 fisheye at BHphoto, Amazon, Adorama, FotoErhardt, Calumet, WexUK.