The Fotodiox DKL Adapters were modeled after the Kodak Retina DKL Lenses manufactured by Schneider Kreuznach. Do to the variances between original manufacturers in tolerance and lock placement we cannot guarantee that these adapters will fit all DKL lenses. It is also important to note that most lenses of this age were built with brass mounting flanges that can wear down over time, this may cause you lens to feel loose. The same wear issue can occur on the locking mechanism of the lens. PLEASE TEST YOUR LENS ON THE ADAPTER IN A SAFE ENVIRONMENT PRIOR TO DAY TO DAY USE TO ENSURE THAT YOUR LENS IS SECURE.


https://en.wikipedia.org/wiki/Kodak_Retina_Reflex#DKL-mount_lenses

List of Schneider-Kreuznach Retina DKL-mount lenses:

  • Schneider-Kreuznach Retina-Curtagon 28mm f/4
  • Schneider-Kreuznach Curtagon 28mm f/4 (for Instamatic Reflex)
  • Schneider-Kreuznach Retina-Curtagon 35mm f/2.8
  • Schneider-Kreuznach Curtagon 35mm f/2.8 (for Instamatic Reflex)
  • Schneider-Kreuznach Retina-Xenar 45mm f/2.8 (for Instamatic Reflex, can be used with Retina Reflex S, III, IV, but not with the Retina IIIS)
  • Schneider-Kreuznach Retina-Xenar 50mm f/2.8
  • Schneider-Kreuznach Retina-Xenon 50mm f/1.9
  • Schneider-Kreuznach Xenon 50mm f/1.9 (for Instamatic Reflex)
  • Schneider-Kreuznach Retina-Tele-Arton 85mm f/4
  • Schneider-Kreuznach Retina-Tele-Arton 90mm f/4 (for Instamatic Reflex)
  • Schneider-Kreuznach Retina-Tele-Xenar 135mm f/4
  • Schneider-Kreuznach Retina-Tele-Xenar 200mm f/4.8 (does not have the rangefinder cam necessary for focussing through viewfinder with the Retina IIIS)

List of Rodenstock Retina DKL-mount lenses:

  • Rodenstock Retina-Eurygon 30mm f/2.8
  • Rodenstock Retina-Eurygon 35mm f/4
  • Rodenstock Retina-Ysarex 50mm f/2.8
  • Rodenstock Retina-Heligon (and Retina-Ysarex???) 50mm f/1.9
  • Rodenstock Retina-Rotelar 85mm f/4
  • Rodenstock Retina-Rotelar 135mm f/4

List of third-party Retina DKL-mount lenses:

  • Univer-sar Tele Photo 135mm f/4
  • Bittco Super Vemar 135mm f/4
  • Vemar Telephoto 200mm f/4.8