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Soviet Mirror Lenses


Soviet mirror lenses fall into 2 different design group families. The Matusutov Tele-Objective which consists of the MTO, the MTOA the 3M(actually ZM in cryllic) and the Rubinars.

 

MTO Family

 

The MTO was originally designed for the M39 lens mount Zenit SLRs. They had a slightly different back focus than the M42 cameras and the depth of field was relied upon to make an acceptable image. This resulted in less than stellar performance. So a recalculation was made for the back focus distance on the M42 cameras which resulted in the "MTOA" series of lenses which were optimized for M42 cameras. The 3M lenses were an other recalculation to improve performance.

 

Rubinar Family

 

Research done by P.O.Rubin allowed a simpler completely different design for easier to manufacturer Mirror lenses. It also allowed the manufacture of faster mirror lenses.They are a completely different design from the MTOs.


MTO Family  of LENSES


MTOM 500

Very little is known about this 500mm f8 mirror lens. It is labeled Leningrad which was the home of the Soviet Optical Research Institute. It  has the makers logo  of OOMZ (Opytiny Optiko-MekanicheskiyZavod (experimental Optical-Mechanical Factory)) which was part of the optical research institute . They made proof of concept and preproduction prototypes.

 

Technical Specifications
Lens Mount: M39
Manufacturer: OOMZ
Dimensions:
Diameter:
Length:
Finish: black
Click Stops: none
weight:
Diaphragm Type: fixed f8
Elements/groups
filter size: mm
Typical serial no:620883

{Front of MTOM 500} {side of MTOM 500}



MTO 500 f8.0


This was the first 500mm f8 mirror lens in production in the world. Yes, the Soviets had mirror lenses in production before the japanese! The initial manufacture was KMZ which then transitioned to LZOS. These lenses can be identified by their shiny black finish and larger diameter bottoms. They came in wooden boxes with 3 filters and lens caps. A little later they came with little threaded rings to make them m42 and shortly after they accepted T mount adapters. When LZOS started manufacturing these lenses(approx 1970) they made 3 minor changes. The focusing ring had chrome highlights, the lensmount was m42, the filters were in thinner mounts and the LZOS symbol was on the ring. They were imported into the U.S. by Spiratone.




manual

Technical Specifications
Lens Mount: M39
Manufacturer: KMZ
Dimensions:
Diameter: 10.2cm
Length:71cm
Finish: black
Click Stops: none
weight: 1520gm
Diaphragm Type: fixed f8
Elements/groups 4/3
filter size: M77X.75
Typical serial no: 022131

{Front of KMZ MTO 500} {side of KMZ MTO 500} { KMZ MTO 500 box}
{Front of LZOSMTO 500}
{side of LZOSMTO 500}
{LZOS MTO 500 box}

MTO 500A f8.5


This is the first re-calculated design 550mm f8.5 mirror lens after production was transfered from KMZ to LZOS. I have been unable to determine if the changed numbers represent a real change in the lens or just accurate specifications. I have one example with the Soviet best quality symbol on the lens and the case.These lenses have built in sliding lens hoods, shiny black finish and larger diameter bottoms. The large base of these lenses rotates to allow the use of these lenses in both portrait view and landscape view by just rotating the canera. They came in a leather case with 3 filters and lens caps and accepted T mount adapters.




manual

Technical Specifications
Lens Mount: M42
Manufacturer: LZOS
Dimensions:
Diameter: 104cm
Length:160cm
Finish: black
Click Stops: none
weight: 1243gm
Diaphragm Type: fixed f8
Elements/groups 4/3
filter size: M77X.75
Typical serial no: 712423

{Front of MTO 500A} { MTO 500A bottom}
{ MTO 500A bottom}
{ MTO 500Atop} {MTO 500A Set}

MTO 1000 f11

This was the first 1000mm f11 mirror lens in production in the world Initial production was only a few years after the 500.The initial manufacture was KMZ which then transitioned to LZOS. The only way you can tell this lens from the MTO 1000A is that it does not have the "A" engraved on it. These lenses can be identified by their shiny black finish and larger diameter bottoms. They came in wooden boxes with 3 filters and lens caps. A little later they came with little threaded rings to make them m42 and shortly after they accepted T mount adapters. They were imported into the U.S. by Spiratone or at least appeared in Spiratone's literature.


Note: 1.This is hearsay. They may never have been made at KMZ. I have never seen one with the KMZ logo!
          2.See the images of the MTO 1000A since I do not have a MTO 1000!


 Manual





Technical Specifications
Lens Mount: M39
Manufacturer: KMZ/LZOS
Dimensions:
Diameter: 16.5cm
Length: 30cm
Finish: black
Click Stops: none
weight: 3425gm
Diaphragm Type:fixed f10
Elements/groups
Filter size: M120X1
Typical serial no: 680050

{Front of MTO 1000} {side of MTO 1000} {cased MTO 1000}



MTO 1000A f10

This appears to be the first improved 1100mm f10.5 mirror lens after production was transfered from KMZ to LZOS. I have been unable to determine if the changed numbers represent a real change in the lens or just accurate specifications. I have one example with the Soviet best quality symbol on the lens and the case.These lenses have built in sliding lens hoods, shiny black finish and larger diameter bottoms. The large base of these lenses rotates to allow the use of these lenses in both portrait view and landscape view by just rotating the canera. They came in a leather case with 3 filters and lens caps and accepted T mount adapters.




manual

Technical Specifications
Lens Mount: M39
Manufacturer: KMZ/LZOS
Dimensions:
Diameter: 16.5cm
Length: 30cm
Finish: black
Click Stops: none
weight: 3425gm
Diaphragm Type:fixed f10
Elements/groups
Filter size: M120X1
Typical serial no: 680050

{Front of MTO 1000} {side of MTO 1000} {box for MTO 1000}



MTO-11CA f10


This lens is a re-design of the 1000mm MTO. They did away with the bulging bottom. It comes in a leatherette case with 3 filters and lens caps.




manual

Technical Specifications
Lens Mount: M42
Manufacturer: LZOS
Dimensions:
Diameter: 126mm
Length: 238mm
Finish: black
Click Stops: none
weight: 1.95kg
Diaphragm Type: fixed f10
Elements/groups
Filter size: M116x1
Typical serial no: 892217

{Front of MTO-11CA} {side of MTO-11CA}



3M-5A f8.0


This lens is a re-design of the 500mm MTO. The lens appears to have been in full production when multicoating was phased in as there are both single and multi coated versions. They did away with the bulging bottom. there is a collapsable lens hood. It comes in a round leatherette case with 4 filters and lens caps.




manual

Technical Specifications
Lens Mount: M42
Manufacturer: LZOS
Dimensions:
Diameter: 8.8cm
Length: 15.2cm
Finish: black
Click Stops: none
weight: 1100gm
Diaphragm Type: fixed f8
Elements/groups
Filter size: M77X.75
Typical serial no: 792778

{Front of 3M-5A} {side of 3M-5A} {side of 3M-5A}



3M-5CA f8.0

This lens appears to be a re-design of the 3M-5A. This lens is much smaller than its' predecessor. They did away with the lens hood and made it much smaller. It comes in a round leatherette case with 4 filters and lens caps




manual

Technical Specifications
Lens Mount: M42
Manufacturer: LZOS
Dimensions:
Diameter: 83mm
Length: 139mm
Finish: black
Click Stops: none
weight: .062kg
Diaphragm Type: fixed f8
Elements/groups
Filter size: M72x0.75
Typical serial no: 892432

{Front of 3M-5CA} {side of 3M-5CA}



3M-7K f5.6

This lens appears to be a 300 mm re-design. I have finally found one of the lenses. It has caused more questions than it has answered. It was made by a factory that made no other lenses. The markings and manual say that it is a Pentax K mount. However, it has a M42 mount. It comes in a leatherette case with 4 filters and lens caps




manual

Technical Specifications
Lens Mount: M42
Manufacturer: LZOS
Dimensions:
Diameter: 76mm
Length: 81mm
Finish: black
Click Stops: none
weight: 0.47kg
Diaphragm Type: fixed f5.6
Elements/groups
Filter size: M67x0.75
Typical serial no: .

{Front of 3M-7K} {side of 3M-7K}



3M-6A f6.3

This lens is a re-design of the 500mm MTO with the intent of making it faster. They did away with the bulging bottom. there is a collapsable lens hood. It comes in a leatherette case with 4 filters and lens caps




manual

Technical Specifications
Lens Mount: M42
Manufacturer: LZOS
Dimensions:
Diameter: 112.5mm
Length: 182mm
Finish: black
Click Stops: none
weight: 1.4kg
Diaphragm Type: fixed f6.3
Elements/groups
Filter size: M95x1
Typical serial no: 872137

{Front of 3M-6A} {side of 3M-6A}




Rubinar Family of Lenses

Rubinar 300 f4.5

This is a new design with Macro performance. This lens was originally produced in Pentax K mount and then in M42. They are very uncommon in K mount. It comes in a square leather case with front and rear lens cape, a hood and an 87mm 4X ND filter and a yellow filter.





manual

Technical Specifications
Lens Mount: M39
Manufacturer: LZOS
Dimensions:
Diameter: 113mm
Length:100mm
Finish: black
Click Stops: none
weight: 662gm
Diaphragm Type: fixed
Elements/groups
Filter size: m77x.075
Typical serial no: 941019

{Front of Rubinar 300} {side of Rubinar 300} { Rubinar 500 f8 case}




Rubinar 500 f5.6


These are a new design with Macro performance. This lens was originally produced in Pentax K mount and then in M42. They are very uncommon in K mount. It comes in a square leather case with front and rear lens cape, a hood and an 87mm 4X ND filter and a yellow filter.


comment:: mine was produced just after the fall of the Soviet Union and is in a really nice zippered nylon case



manual

Technical Specifications
Lens Mount: K, M42
Manufacturer:Lzos
Dimensions:
Diameter: 113mm
Length: 130mm
Finish: black
Click Stops: none
weight: 1.6kg
Diaphragm Type: fixed f8
Elements/groups
Filter size: m77x.075
Typical serial no: 941981

{Front of Rubinar 500 f5.6} {side of Rubinar 500 f5.6}
{side of Rubinar 500 f5.6}




Rubinar 500 f8.0


These are a new design with Macro performance. This lens was originally produced in Pentax K mount and then in M42. They are very uncommon in K mount. It comes in a square leather case with front and rear lens cape, a hood and an 87mm 4X ND filter and a yellow filter.



manual

Technical Specifications
Lens Mount: K, M42
Manufacturer:Lzos
Dimensions:
Diameter: 81mm
Length: 99mm
Finish: black
Click Stops: none
weight: .55kg
Diaphragm Type: fixed f8
Elements/groups
Filter size: m77x.075
Typical serial no: 942757

{Front of Rubinar 500 f8} {side of Rubinar 500 f8} { Rubinar 500 f8 case}



Rubinar 1000 f10

These are a new design with Macro performance.  This lens was originally produced in Pentax K mount and then in M42. They are very uncommon in K mount. It comes in a leatherette case with 3 filters, a lens hood and lens cap




manual


Technical Specifications
Lens Mount: K, M42
Manufacturer: Lzos
Dimensions:
Diameter: 125mm
Length: 210mm
Finish: black
Click Stops: none
weight: 1.9kg
Diaphragm Type: fixed f10
Elements/groups
Filter size: M120x1
Typical serial no:

{Front of Rubinar 1000} {side of Rubinar 1000} { Rubinar 1000 case}



© Nathan Dayton 2000