I want fellow members to know that I have been successful in resurrecting the use of Kodak Ektra Ektar lenses (full frame and without any magnification factor) on my Sony A7R body. Using an adapter especially made for me by a small British firm I have been able to fit my Ektar 35mm f3.3, Ektar 50mm f1.9, Ektar 90mm f3.5, and Ektar 135mm f3.8 lenses on my camera body without any difficulty whatsoever. It has really been enjoyable to see the results obtained with these lenses, proud premium products made by Eastman Kodak more than 70 years ago. They were the first lenses to be coated internally, when almost all other lenses were uncoated. These lenses were a part of an American-made rangefinder system introduced by Kodak in early 1941 to compete directly with Leica and Contax rangefinder cameras. The price of this equipment rivalled or exceeded the cost of popular American cars of the era, leading to its diminished appeal for the American public. It had a complicated lens mount and it possessed a somewhat unreliable camera body shutter; this latter feature certainly did not help matters. The Kodak Ektra was phased out by the end of the 1940s. With my adapter these lenses have ceased to be mere curiosities chiefly languishing as paperweights on a shelf and resumed their service as fully usable 'Rolls-Royce' quality products of a bygone age.