Anybody succeed in mounting an EL-Nikkor 210 enlarging lens on an old Durst 138 (the old one with the non-removable Tripla lens turret). I spoke to Mr Jensen (of Jensen Optical) about it and he implied that I would probably get vignetting not from the lens but because the turret "holes" are still too small for the lens even if used with an extension Lapla lenseboard. The Nikkor 210 is a monster lens with a 72 mm mounting ring. He suggested I opt for a Schneider Componon 210 or Rodenstock Rodagon 210. He also implied that the Schneider 180 has less coverage (inadequate for 5x7) compared to the Rodagon 180, though it may be somewhat sharper. Any experience with mounting this lens on the Durst? Any experience with any of the other lenses? Thanks. Sincerely, Hany.