F-92 92 mm f/ 2 (Helios-92, LETI 60M) Lens
Do you like a good instrumental music?
Listen to new beautiful music from composer Sergei Borodin. Click HERE...
|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
|Focal length||Max. aperture||Min. aperture||Blades||Min. Focus (m.)||Filter Ø (mm.)||Weight (gr/oz)||Length (mm/in)|
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
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
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):