Industar-61 L/Z (MC) 50 mm f/ 2.8 Lens

The Industar-61 L/Z 50 mm f/ 2.8 (Russian: "Индустар-61 Л/З 50/2.8") is a standard lens for SLR cameras with m39 and m42 screw mounts, based  on the Tessar optical scheme. It came in two variants: with and without multi-coating (MC)

The optical scheme was calculated by the Soviet optician Academician  Slyusarev G. and Sokolova V.

The aperture is made up of 6 curved blades (blackening is good) that create a somewhat rounded pentagon that made it possible to get an interesting characteristic bokeh.

The lens generates a sharp image with  good contrast, but with slight aberrations.

The lens has a good macrography potential. It enables to take 1:1.25 macro scale pictures or 1:1 with a reversed lens.

It came in several versions with different designations.

The following characteristics are given for the most mass and popular version - the Industar-61 L/Z 2.8/50 (Индустар-61Л/З 2.8/50).

Resolution according to the technical specifications (center/edge) for the L/Z version: 42/30 lines/mm

Other versions:

The Industar - 61 M (Индустар-61М)

• System: m42
• Minimum focusing distance: 0.5 m.
• Filter diameter: 40 mm
• Resolution according the technical specifications (center/edge): 38/25 lines/mm.
• Coefficient of transparency: 0.75
• Length: 55 mm
• Weight: 140 gm

The Industar-61-Z (Индустар-61-З)

• System: m39
• Minimum focusing distance: 0.42 m
• Filter diameter: 52 mm
• Resolution according to the technical specifications (center/edge): 45/28 lines/mm
• Coefficient of transparency: 0.85
• Length: 58 mm
• Weight: 260 gm

The Industar-61L, Industar-61 L/D

These versions for rangefinder cameras will be added to the database and described in a separate article.

• Topic on oly43club.ru (Russian)
• Review of on foto-index.ru
• The best examples on Flickr

• Promotional brochure (views: 496)
• Industar-61_in_catalog_GOI_1963 (views: 472)
• Industar-61 L / Z (Description) (views: 862)

• Comparison of Several 50mm Prime Lenses: Asahi Super-Takumar 55mm f1.8 M42, Helios 44M-6 58mm f2.0 MC M42, Industar-61 L / S 50mm f2.8 M42.
• Cooke Triplet, Tessar and Planar: E. Ludwig Meritar 50mm f/2.9, Industar-61 L/Z 50mm f/2.8 and Nikon Micro Nikkor 55mm f/3.5 non-Ai (PK-3).

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