One of my favourite lenses, the Carl Zeiss Biotar 58mm f2 lens. It is surprisingly sharp and a great general purpose lens. The optics have the odd coating mark but overall excellent for a lens of this era where glass and coatings were soft.
Carl Zeiss Jena Biotar 1.5 75mm Export Version EXA/Exakta mount
Carl Zeiss Jena Lens Biotar 1:2 f=5.8cm Red T 17 Blades 58mm F/2 M42 Thread
M42 Carl Zeiss Jena Q1 Biotar 1.5/75 mm Aluminium Lens
Carl Zeiss Jena 12.5Mm 1:2 Lens Biotar Prime Focal Length (Pentaka 8)
Zeiss Jena Biotar 2/5.8 cm Heavy Version in feet for Exakta 1939 approx.
Carl Zeiss Jena Exa Exakta Export from Jena Q1 Biometar 1:2.8 f=80mm Lens raaug
