Orion-15 28mm F6

Review and Photo example of Orion-15 28mm F6 made by ZOMZ, Russia.

Table of Contents



Orion 15 is a Russian-made 28mm wide-angle lens, aperture = 6, known as ZEISS’s TOPOGON copy.
This individual was made at the ZOMZ factory from the bow-like markings.
There seem to be many old models of this lens in circulation, and many have worn-out aluminum barrels.

The filter diameter is 40.5mm, and I would like to install it to protect the convex front element, but like the NEW RUSSAR+, if you install a filter, you will not be able to move the aperture, which is a disadvantage. Since it’s a cheap lens, I think it’s best to take advantage of it and use it without a filter, or use it as a fixed F lens since it’s dark at F6 even wide open.

The minimum focusing distance is 1m, which is the same as that of the Barnack type (Leica A/Leica I) Leica, and it is a shame that you cannot get close enough with the lens alone.

The lens configuration is symmetrical, so I’m glad that there is no distortion when taking pictures of buildings. Perhaps because of the focal length of 28mm, I used the LEICA M typ240, which tends to produce color cast compared to the wider-angle Rusal or Super Angulon. I’m glad that the effect is not noticeable.


focal length(mm)28
Maximum aperture6
Minimum aperture22
Lens configuration4groups 4elements
Minimum distance(m)1.0mWorks with camera rangefinder in all focus ranges.
Lens length(mm)20
Lens max diameter(mm)51.5
Filter diameter(mm)40.5Aperture operation is not possible when a filter is attached.
Weight(g)112The total of the lens and the L-M mount adapter was actually measured.

Reference links

Update history

  • 2024.03.03
  • 2022.02.10

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