I have a D3 which I use for 4X5 and 6X9 and a Durst 601 which I use for 35mm and 6X6, although a D3 can be used for any format up to 4X5 I like using the Durst for 35mm and 6X6, small foot print, easy to take down and set up if I want addtional table space when printing larger format. You can find both color and condenser inserts for the head, and the bulb is off set, not directley over the negative so I use a standared 75 or 100 watt softwhite bulb which I have horded. Well made.