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

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 (15432)

Average price: $99

Specifications:

Focal length	Max. aperture	Min. aperture	Blades	Min. Focus (m.)	Filter Ø (mm.)	Weight (gr/oz)	Length (mm/in)
90mm	f/2.0	f/2.0	no	0.9		400/14,1	98/3,9

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:

Review by DAG HALL

Posted by: vitaliian Date of publication: 14.05.2013

Go to the discussion of this lens on sour forum

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

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Заход на посадку
Autor: danielyy1022

2897

Гирлянда
Autor: danielyy1022

4.69

2405

глубина резкости
Autor: danielyy1022

4.67

1927

Кусочек счастья
Autor: danielyy1022

4.67

2931

Mechanical quality	2.75	8
Optical quality	4.38	8
Usability	2.38	8
Pricing / Value	4.62	8
Bokeh	4.62	8
Overall lens rating	3.75

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	F-92 f/2 90mm Helios USSR 35mm portrait planar lens 100/50 dSLR FX Canon Nikon Price: 149$. (~1.87$) Seller: SharkDD Reputation: 11 (11/~0/0)