My d2 has a 135mm and a 2-1/2 cone for 4x5 negatives. I put a 6x6cm negative in and it projected a 3"x3" image with a lens-to-easel distance of 12-1/2". It looked sharp under the focuser, but i have never printed that small using this configuration.
Oh! oh! . . . Gotta go, the pizza is ready.