Carl Zeiss Jena's wide-angle for Praktica — the 28mm f/2.8 in bayonet mount.
The Zeiss 28mm f/2.8 for Praktica Bayonet is a CZJ wide-angle prime for the Praktica B-mount system. CZJ quality at 28mm f/2.8 provides respectable wide-angle coverage. The Praktica B mount limits all compatibility. CZJ's optical heritage ensures decent quality despite the limited mount.
CZJ quality provides good wide-angle performance. Sharpness is respectable from f/2.8. The 28mm provides the classic wide-angle perspective. Multi-coating on later versions improves contrast. CZJ's German precision manufacturing ensures reliable quality. The Praktica B mount is the sole limitation — the optics deserve a more compatible mount.
Praktica Bayonet mount — very limited. Filter thread varies. Weight varies. Build quality is CZJ precision. Manual focus. Adapters to mirrorless are rare. The CZJ 28mm quality is genuine. The Praktica B mount restricts all practical utility to a very small camera range.
Very cheap. CZJ quality at 28mm f/2.8. Praktica B mount limits use. Not recommended unless for Praktica B cameras. The CZJ quality is wasted on the limited mount. Adapters may exist but are uncommon. Only for Praktica B system owners.