Industar-61L / D 2.8 / 55 Normal high-aperture lens with coated optics for rangefinder cameras.

Focal length: 55mm

Field of view: 46 °

Frame size: 24 × 36 mm

Number of lenses / groups: 4/3

Working distance - 28.8 mm

Aperture ratio: 1: 2.8

Aperture scale limits: 1: 2.8–1: 16

Aperture blades: 6

Iris Adjustment: Fixed

Aperture preset: none

Near focusing limit - 1 m

Connections:

lens with camera - M39 × 1

for screw-in bits - M40.5 × 0.75

for slip-on attachments - ∅42 mm

Filter Mount Location: Front

Resolution according to TU (center / edge): 44/30 lines / mm

Light transmittance: n / a

Weight - 131 g

At apertures 4-5.6, Industar-61L / D demonstrates a fairly high sharpness throughout the field with good contrast.

However, opinions about its unrivaled sharpness are likely exaggerated.

P.S. Many Soviet lenses can be used with digital cameras. To do this, you need an adapter. The cheapest adapters are sold on Aliexpress. The table will help you choose an adapter for your system.

Attention! With a DSLR, the rangefinder lens will only work in macro mode. And don't forget the crop factor.