Fred, the lens is a 50mm Companon f/3.5. I've asked the seller to check the lens box to determine the thread. A picture of the packing Styrofoam shows a slot below the enlarging head. It looks like an object similar to a condenser or filter tray fits in the packing slot. I'm thinking the unit had to ship with both condensers.
Reading the manual I see the M601 lens standard adjusts for verticals while the M600 does not.
Do you ever get Newton ring issues?
Last edited by Richard Jepsen; 12-17-2012 at 07:02 PM. Click to view previous post history.