[rollei_list] Question re. Planar vs. Tessar
- From: Ardeshir Mehta <ardeshir@xxxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Sun, 3 Apr 2005 01:02:09 -0500
Hi all,
I just read at <http://johnlind.tripod.com/zi/zeissikontext.html> the
following:
[QUOTE]
In 1896 Dr. Rudolf created the Planar, derivatives of which live on
today most notably in the legendary Rollei TLR. The original symmetric
Planar suffered from flare (lens coatings were not invented yet), but
was free from spherical aberration and astigmatism. Reducing the flare
issues with the symmetrical Planar resulted in the design of the
assymetrical Tessar in 1902. The Tessar quickly became known as "The
Eagle Eye" because of its extremely high resolution and excellent
contrast with very low distortion. The Tessar is a simple lens with
four elements in three groups and yet remains one of the finest lens
formulations of the 20th Century.
[END QUOTE]
So I gather that the Tessar is supposed to be an IMPROVEMENT over the
Planar. Why, then, is the Planar generally preferred over the Tessar
among users of the 6x6 format, whether SLR or TLR? Any ideas? Richard
... ?
Ardeshir <http://homepage.mac.com/ardeshir>
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