Overview

The Helios-65 52mm f/2 is a vintage Soviet lens known for strong swirly bokeh and a sharp center wide open, but with poor edge resolution and significant coma (Alun Thomas). It suffers from veiling flare due to shiny aperture blades, and color shifts between apertures (Alun Thomas). Build is compact, but adapting requires custom mounts (Alun Thomas). Stopped down to f/8, resolution improves markedly (Alun Thomas). It suits users seeking a characterful, flawed lens for artistic effects, not technical perfection.