Rubinar () is a

Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

lens A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (''elements'') ...

design series developed and produced by JSC Lytkarino Plant of Optical Glass (LZOS). It is compact despite its long

focal length The focal length of an Optics, optical system is a measure of how strongly the system converges or diverges light; it is the Multiplicative inverse, inverse of the system's optical power. A positive focal length indicates that a system Converge ...

s. Rubinars can be used with proprietary mount cameras by using M42 adaptors. Focusing motors are absent though (manual only), and so are the variable apertures.

Variants

* MC Rubinar - 1:8.0 500 mm * MC Rubinar - 1:4.5 300 mm * MC Rubinar - 1:5.6 500 mm * MC Rubinar - 1:10 1000 mm * Rubinars may be transformed into

spotting scope A spotting scope is a compact lightweight portable telescope optimized for detailed observation of distant objects. They are used as tripod mounted optical enhancement devices for various outdoor activities such as birdwatching, skygazing and ...

s using an M42 ''Turist-FL'' ocular attachment and image redresser. Their optical arrangement gives flexibility in placing the focal plane and changing the focal ratio by mere refocus. * Astro-Rubinar is a Rubinar 1000 mm kit including oculars and a 90° prism for convenient use as a visual telescope. * MTO lenses by Soviet manufacturer KMZInformation about the KMZ Zeni
MTO-500
an
MTO-1000
mirror lenses. Retrieved 14 July 2019. utilise a similar design, with a single Maksutov achromatic corrector.

References

External links

LZOS website
*
MC Rubinar - 1:8.0 500 mm MACRO

MTO-11CA 10/1000 Telephoto Lens
on LZOS website * {{usurped,
Communist Cameras
} Soviet photographic lenses Mirror lenses