Carl Zeiss Jena Biotar 58mm f/2 (non-preset)
The Carl Zeiss Jena Biotar 58mm f/2 (non-preset) photo lens has a manual focus and is suitable for full frame cameras. It has 17 aperture blades that produce a pleasant bokeh effect. The lens is compact and lightweight, with a filter diameter of 40.5mm. It does not have autofocus and requires manual focusing. The lens is made up of multiple lens elements and has a lens coating for improved image quality. It was manufactured some time ago but is still a popular choice among photographers. The aperture value of f/2 allows for a bright image and the build quality is sturdy. The lens has a high resolution and can produce sharp images. There are alternative lenses available but the Carl Zeiss Jena Biotar 58mm f/2 (non-preset) is a great option for those looking for a compact manual focus lens with a beautiful bokeh effect.