help help update:
# Voigtlander Ultron 50mm f/2.0 (Leica M)
# Voigtlander Septon 50mm f/2.0 (Leica M)
I think both SLR Okay
Regarding Voigtlander DKL mount lenses for Bessamatic and Ultramatic cameras, I had tried the ones on hand and all worked fine with adapter to Canon EF and Nikon bodies. The lenses I tried included:
1. Skoparex 35/3.4
2. Skopargon 40/2.0
3. Color-Skopar 50/2.8
4. Septon 50/2.0
5. Dynarex 90/3.4
6. Super-Dynarex 135/4.0
7. Zoomar 36-82/2.8
I also tried a few Kodak retina reflex lenses (DKL)--Curtagon 35/2.8 and Schneider Xenon 50/1.9, Schneider Tele-xenar 135/4.0 etc., without problems; so I believe they should also work fine with Canon and Nikon bodies etc.
The above mentioned Voigtlander and Schneider lenses are reasonably priced lenses (except perhaps in the case of Skopargon and the Zoomar) with wonderful color and resolving power, I like the (relatively lower) contrast of the lens which helps in capturing the finer gradation under bright sun. The only short coming could be the rather long nearest focusing distance.