In a message dated 5/13/2006 11:50:39 AM Eastern Standard Time, Jan.Decher@xxxxxxx writes: This brings up the question why Omega went with the clumsy lens cone design and not with more extensive bellows? Durst, Leitz. Kaiser seemed to be able to build enlargers without lens cones. Jan Seems like my long gone Rollei condenser enlarger had a plastic lens cone for 6X6. Lance