53mm · f/1.8
The Helios-103 53mm f/1.8 is a vintage Russian lens with a Contax mount, requiring a specific adapter for modern cameras. Optically, it produces pleasing bokeh with elongated circles of light toward the edges, but is prone to flare due to lack of multi-coating. Build quality includes a leather case. It is very cheap, around $89 used. The lens suits photographers seeking vintage character and soft effects, but users should be aware of flare issues and the need for careful focusing.