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Re: [OM] Zuiko lens contrast

Subject: Re: [OM] Zuiko lens contrast
From: Winsor Crosby <wincros@xxxxxxx>
Date: Mon, 16 Mar 1998 22:16:30 -0800
>Ulf Westerberg wrote:
>
>Another fine example of good Olympus glass and now the numbers:
>
>Lens test of macro lenses made by the German magazin Color Foto,
>published in 1/88,2/88.
>The graphs, of this test, are missing here for obvious reasons.
>The quality numbers are basing on MTF measuring, the difference of one
>whole number marks an, for the critical observer, just noticable
>difference in
>sharpnes, contrast. The maximum number is 10, which stands for a flawless
>lens.
>The number are computed and weigthed for the central half diameter to
>2/3 and the rest to 1/3, the extrem corners are not rated.

Outstanding.  Thank you Ulf for your hard work in bringing this to us.


Winsor Crosby
Long Beach, California
mailto:wincros@xxxxxxxxxxx





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