Sep 21, 2010 #17 andy_con 0 Joined May 24, 2007 Messages 3,394 Points 0 think the lens27 is coated for check you would have to check the roithner web site. lens27 is glass
Sep 21, 2010 #19 Morgan 0 Joined Feb 5, 2009 Messages 2,174 Points 0 I think it would be diplomatic to check that out on photonlexicon. M