I thought I saw that you could attach the extender 1.4 to the Composer Pro with Double Glass + the Macro lens stacked. When I try this I keep getting an error from my camera which is the Canon 5D Mark II. Is it possible to attach the extender with the Composer Pro? http://lensbaby.com/forum/read.php?9,155769,155769#msg-155769 Mon, 20 May 2013 20:47:52 -0700 Phorum 5.2.8 http://lensbaby.com/forum/read.php?9,155769,155769#msg-155769 http://lensbaby.com/forum/read.php?9,155769,155769#msg-155769 suncatcher How Do You Do That? Mon, 19 Dec 2011 08:25:43 -0800