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Subject: Älter und historische Monokulare

From: "u.zeun%cityweb.de" <u.zeun@___b.de>

I am in progress of publishing a website (still only in German) on (handheld) monocular telescopes. My starting point was collecting monoculars for visually impaired persons, monoculars they can use for orientation and mobility. buying differnt models I also bought some old items through eBay. This items are lsited on my website as well. but information about the time dating, optical details etc. are rare or not available.

(many pop-ups from    the provider - sorry about that)

Website concerning monoculars

http://www.monokulare.0catch.com

You will find the vintage and older versions of monoculars at

http://www.monokulare.0catch.com/altemono.htm

   Regards    Ulrich Zeun Dortmund, Germany    

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Binocular List #276: 17 November 2003

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Subject: Steiner M22 retirement

From: Michael Zhou <systemsarchitect@___com>

  I would like to add a piece of the puzzle to the "Steiner M-22G evolution" by Steve Harris.

  I speculate the main reason for retiring the Steiner M22 only few years after its introduction is due its poor handling of stray light.  Under certain lighting condition, the stray light problem compromises the contrast so much that it renders the binocular practically useless. For example, if you were in a well-lighted base station and try to scan the outside for activities during the night, the stray light from the area you're standing will interfere to a point you would think there's white smoke around you. The temporary fix would be to have the lights in the  base turned off, or cup your hands around the objectives, or move to an unlighted area. Besides this, the M22 also suffers from other quality control problems such as the two tubes giving FOV that are not leveled, variation in contrast, and variation in the color of the laser filter coating. Makrolon is poor choice for the hinge due to stress imposed on it during interpupilar adjustment.  The soft detachable eyecups are great but they come off too easily.

  Steiner/Pioneer Research claimed that the M22 was manufactured as a use and throwaway item, and not meant to be serviced other than replacing the rubber armor or exterior plastic attachments. The few QC issues weren't showstoppers and were probably a side effect of belt tightening by the manufacturer.  To have binocular that is doesn't give the best image or is missing the eye cups is not mission critical, but to have a pair that is nonfunctional under some lighting condition is.  The M22 design was perhaps fresh out of the drawing board back in the 1980's, but what's surprising is how this flaw managed to make it to production.  From the M22, Steiner derived a complete line of military/marine binoculars for the civilian market, I am curious if these decedents inherited this problem.

  Shortly after the Gulf War, the Steiner M22 was replace with the Fujinon M22, which addressed this stray light problem. In my opinion, the Fujinon M22 is not as comfortable as the Steiner M22 but all the shortcomings were addressed. The contrast of the Fujinon M22 is outstanding under any lighting condition.

Michael Zhou

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