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

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

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

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

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

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

Optical design

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

Format: 35mm SLR

Type: Prime lens

Focusing: Manual Focus (MF)

Lens mounts: Other mount

First year of production: 1977

Optical design: Projection double-Gauss, 6 elements in 4 groups, planar

User reviews (2)

Photos (48)

Tests (0)

Owners (12)

Views (15441)

Average price: $99

Specifications:

Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr/oz)Length (mm/in)
90mmf/2.0f/2.0no0.9 400/14,198/3,9

Additional information:

 

The F-92 2/92 (Helios-92) is a fast multicoated projection lens for the LETI 60M (rus:  ЛЭТИ 60М) slide projector with 24х36 mm frame. Unofficial name Helios-92.

According to the manufacturer's instruction the optical scheme comprises 6 elements in 4 groups, i.e. the Planar optical design.

The lens' flange focal distance allows it to be mounted on all modern SLR and mirrorless cameras with a considerable infinity override.

The lens is equipped with a simplest helicoid in the form of a single groove. It has no diaphragm.

Resolution (center/edge): 100/50 lpmm

Additional information:

  • diagonal angle of view 25°
  • max. magnification 1:2
  • diameter 68 mm

Links to online resources:
Posted by: vitaliian   Date of publication: 14.05.2013

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Photos taken with this lens F-92  92 mm f/ 2 (Helios-92, LETI 60M):


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Autor: danielyy1022
5 4 2898

Гирлянда
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4.69 0 2406

глубина резкости
Autor: danielyy1022
4.67 0 1928

Кусочек счастья
Autor: danielyy1022
4.67 0 2932

Mechanical quality2.758
Optical quality4.388
Usability2.388
Pricing / Value4.628
Bokeh4.628
Overall lens rating
3.75

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