Rubinar (russian: Рубинар) is a

Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...

lens A lens is a transmissive optical device which 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 Lytkarino Optical Glass Plant (russian: Лыткаринский завод оптического стекла) is a company based in Lytkarino, Russia and established in 1934. It is part of the Shvabe Holding of the state-owned Rostec corporation ...

(LZOS). It is compact despite its long

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

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 high-power telescope optimized for detailed observation of distant objects. They are used as portable optical enhancement devices for various outdoor activities such as birdwatching, skygazing and other naturalis ...

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
* {{in lang, ru}
MC Rubinar - 1:8.0 500 mm MACRO

MTO-11CA 10/1000 Telephoto Lens
on LZOS website
Communist Cameras
Soviet photographic lenses Mirror lenses