The lens is very small, but made beautifully, like most lenses in DKL mount. Sharpness at the centre of the frame is excellent even at f2.8. Stopping down to f11 and the edges are also very good at the slight loss of sharpness. The bokeh produced by this lens is exquisite and pleasing. Colours tend to be more saturated than many other lenses from the same era.
The only negative, is the rather slow maximum aperture for a standard 50mm lens. However, it should be considered an amazing feat to produce such a small lens with an f2.8 aperture more than 60 years ago.
Overall, a very enjoyable lens that produces nice results.
All pictures below were taken with the Voigtlander Color-Skopar X 50mm f2.8 & Sony A7