Edited on 8/13/2009 7:26:55 AM by RCCCUK Etude-2S The Etude-2S is a 2 x 2 inch slide projector manufactured by FED. It is basically a redesigned verion of the Etude. It has a T-3 f/2.8 80mm lens and it uses a 220-230 volt, 100 watt lamp.