Praktica B mount adapter
The Praktica B mount (also called PB-mount) is a bayonet mount that was introduced in 1978. Used with the Praktica B electronic SLR manufactured by VEB Pentacon in East Germany. Praktica B mount lenses are not identical to M42 lenses but very similar and you can purchase them for a fraction of the price. Brands manufacturing Praktica B mount lenses are Carl Zeiss, Beroflex, Meyer-Optik Görlitz, Pentacon and Prakticar. Although the Prakticar lenses are often not branded the classical way (e.g.: often they are not branded as Sonnar or Pancolar lenses) they do have the same optical performance.
Praktica B mount lens adapter guide
There are a lot of adapters available – below you find a link to each camera brand:
Praktica B to Canon EOS adapter
Mounting an Praktica B lens to Canon EOS is unproblematic. It will allow you to focus to infinity. Of course, focusing and aperture settings are done manually. I would recommend that you get an adapter such as this one from Fotodiox.
Praktica B to Micro 4/3 (micro-four-thirds, mft) adapter
Connectivity to micro-four-thirds is unproblematic. The adapter is always quiet large which will increase the “size” of your lens. Focusing to infinity works fine. The only major drawback is that the images are cropped compared a full frame SLR. Even a 35 or 50 prime lens will feel like a telephoto. You can find the adapter here
Praktica B to Fuji-X
All adapters come with infinity focus and are available here.
Praktica B to Nikon F
Adapting to a Nikon F camera is a bit tricky (as usual). Adapters come with a corrective glass element to allow to focus to infinity. This will most likely degrade the optical quality of your results.