re: [OM] FYI - all the 35 mm lenses tested by photodo, in order by Grade (m

[Tom]

On Monday, December 17, 2001 at 11:16, Thomas Bryhn 
<olympus@xxxxxxxxxxxxxxx>
wrote re "re: [OM] FYI - all the 35 mm lenses tested by pho" saying:
...
> There are two ways I can think of that would make testing at infinity
> possible: a) Parallell incoming rays, checking point size in focal plane. b)
> Point source in focal plane, checking the spreading of the light bundle
> coming through the lens.

Yep, they use an optical bench.

tOM
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tOM A. Trottier,        ICQ:57647974    http://abacurial.com
        758 Albert St, Ottawa ON Canada K1R 7V8 
        +1 613 860-6633 fax:231-6115    N45.412 
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"The moment one gives close attention to anything, 
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awesome, indescribably magnificent world in itself -- 
Henry Miller, 1891-1980


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