Lens Lab
    F-92 92 mm f/ 2 (Helios-92, LETI 60M)
    F-92 92 mm f/ 2 (Helios-92, LETI 60M)

    F-92 92 mm f/ 2 (Helios-92, LETI 60M)

    90mm · f/2

    Overview

    The F-92 92mm f/2 (Helios-92, LETI 60M) is a projection lens with a Planar design (6 elements in 4 groups). It produces a soft, pleasant image with gentle, well-controlled bokeh and no swirl. Optical strengths include high center resolution (100 lpmm) and edge resolution (50 lpmm). Weaknesses: no aperture diaphragm (always f/2) and resolution drops beyond 36x24mm. Build: often adapted with a Helios focusing mount, smooth operation. Suits portrait and close-up photographers who enjoy shallow depth of field and soft rendering.