Homepage › Forums › Gear & Links › Photography Equipment › Lenses › Any views on the new sigma 120-400 or 150-500 lenses This topic is empty. Any views on the new sigma 120-400 or 150-500 lenses Dominic 7Participant June 20, 2008 at 12:55 pm Hi All, Does anybody have any views on the above lenses please, How does focusing speed etc. compare with Nikon “AF-S” lenses. Are these optically good? Any comments appreciated, Thanks, Dominic Viewing 1 post (of 1 total) You must be logged in to reply to this topic.