Omnar and Skyllaney convert non-rangefinder lenses to M-mount bayonet

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Omnar Lenses has announced a partnership with Skyllaney Optomechanics to offer customers a lens conversion service. The conversion allows users to convert non-rangefinder lenses to M bayonet with full RF coupling from 0.67m (2.2′) to infinity.

The service uses the Omnar lens platform previously used for batch conversion lenses, like the Canon 26mm F6 to produce the Omnar CN26-6. However, rather than a batch conversion, the new service is a one-off for customers with a working lens they’d like converted to work on an M-mount camera. The service is also available for a non-operational lens that would work with a new mount and focusing helical.

The Omnar lens platform can convert optical blocks from lenses from 8mm to 52.4mm. Omnar notes that this includes, but is not limited to, ‘lenses such as the 42mm Summar, 50mm Sonnar, 28mm Tessar, 35mm Biometar, 40mm Rollei, 21mm Biogon.’ There are numerous limitations concerning optical block size and weight. For full details, click here.

The conversion process varies by the lens, but each conversion includes the following steps:

  • Reverse engineering the optical block to extract the true EFL value of the lens formula, and design of the adaptation mechanics to rehouse the lens into the Omnar lens platform.
  • High precision calculation and machining of the rangefinder camera to ensure RF coupling from 0.67m to Infinity for M, VM and ZM bayonet rangefinder cameras.
  • A high precision, all brass helicoid system designed and manufactured in the United Kingdom.
  • Laser engraved focus ring with your choice of metric or imperial distance increments.
  • All brass finger tab.
  • A clean, lubrication, and adjustment (CLA) of your existing optical block.
  • A choice of antique brassing, house black matte or house gloss black finishes on the new conversion parts (does not include re-paint of existing parts on the optical block such as aperture rings).
  • 1 year warranty on all parts and work.
Carl Zeiss Jena 5cm f/1.5 ‘nickel’ Sonnar – Omnar conversion

As one would expect, this service is costly and will take time to complete. The Omnar lens platform conversion service starts at £1,249, which is just under $1,600 USD at current conversions. This price includes your choice of in-house finish. Certain optical blocks that require complex engineering solutions will increase the price. Professional full lens re-paints are available through Camerakote in Staffordshire, England, for an additional cost. Removal of fungus and haze and ultrasonic cleaning are charged additionally. The conversions typically require 8-12 weeks once your lens is received. The service is offered directly through Skyllaney Optomechanics. For additional information, click here.