Fotodiox Pro adapter for DKL lens to Sony-E

The name of the Deckel mount (best known as DKL) comes from a company based in Germany which also produces the Compur shutters. Deckel was the designer of the bayonet mount for the Retina Reflex, Voigtlander Bessamatic and Ultramatic cameras.

You can use this adapter with lenses from the following cameras:

Kodak:
Retina IIIs, Retina Reflex III, Retina Reflex IV, Retina Reflex S, and the Retina Instamatic.
Voigtlander :Bessamatic / Ultramatic

These adapters have the same aperture ring as the original cameras, allowing a diaphragm range from f1.8 to f22 with and without click stops user selectable via switch

List of lenses:
Schneider
Retina-Curtagon 28/4
Retina-Curtagon 35/2.8
Retina-Curtagon 35/5.6
Retina-Xenar 50/2.8
Retina-Xenon 50/1.9
Retina Tele-Arton 85/4
Retina-Longar 85/4
Retina-Tele-Xenar 135/4
Retina-Tele-Xenar 200/4.8

Rodenstock
Retina-Eurygon 30/2.8
Retina-Eurygon 35/4
Retina-Ysarex 50/2.8
Retina-Heligon 50/1.9
Retina-Rotelar 85/4
Retina-Rotelar 135/4

Voigtlander
Skoparex 35/3.4
Skopagon 40/2
Color-Skopar 50/3.5
Color-Skopar X 50/2.8
Septon 50/2
Dynarex 90/3.4
Dynarex 100/4.8
Super Dynarex 135/4
Super Dynarex 200/4
Super-Dynarex 350/5.6

Schneider-Kreuznach Retina-Curtagon 28mm f/4
Rodenstock Retina-Eurygon 30mm f/2.8
Rodenstock Retina-Eurygon 35m f/4
Schneider-Kreuznach Retina-Curtagon 35mm f/2.8
Rodenstock Retina-Ysarex 50mm f/2.8
Schneider-Kreuznach Retina-Xenar 50mm f/2.8
Rodenstock Retina-Ysarex 50mm f/1.9
Schneider-Kreuznach Retina-Xenon 50mm f/1.9
Rodenstock Retina-Rotelar 85mm f/4
Schneider-Kreuznach Retina-Tele-Arton 85mm f/4
Schneider-Kreuznach Retina-Tele-Arton 90mm f/4
Rodenstock Retina-Rotelar 135mm f/4
Schneider-Kreuznach Retina-Tele-Xenar 135mm f/4
Schneider-Kreuznach Retina-Tele-Xenar 200mm f/4.8