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There is no sales data on this camera.But the same guide states that 6.5x9cm Eromanox.

Skip to the end of the images gallery Skip to the beginning of the images gallery Details Old Zeiss Eronostar lens.

F24cm, f1.8. Very good condition.

Weve found info in 2006 McKeowns guide that this lens belongs to 13x18cm Ermanox large format camera.

But the same guide states that 6.5x9cm Eromanoxes were sold for 1800-3000, 9x12cm for 4800.

No info on 10x15cm and 13x18cm cameras, but I suppose that they should cost even more.

So, I believe that 5000 for this lens is fair price, and it just should wait to a right customer.

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The front lens could be removed and replaced with optional add-ons called Pro-Tessar, which provided access to a limited set of focal lengths and partly compensated the shortcomings of a fixed-lens system.

Published April 16, 2015 Updated July 28, 2015 A succinct history of Carl Zeiss Planar lenses The following article presents a subjective perspective on the history and evolution of the Planar-type lenses from their origins to modern times.

Only general-purpose (non-macro) Carl Zeiss Planar standard lenses (focal length comprised between 40mm and 60mm) are discussed.

Because the 50mm focal length has been the most popular and the most investigated for decades, the history of Planar-type lenses is a loupe-view into the history of the German 35mm photography industry and into the evolution of the global photographic market.

This article was originally written in Italian in 2008 by Marco Cavina and can be found here.

With great pleasure we present this freely translated English version, revised and extended as of early 2015 by Alberto Oddo.

Some of the images below are supplied by Hans-Jrgen Kuc and were originally printed in his excellent Carl Zeiss Contaflex, Contarex and Contarex books.

Dr. Paul Rudolph, one of the mathematicians working at Zeiss, applied this principle to the calculation of the first Planar in 1896.

The name derives from its low astigmatism and high field flatness.

With the technology of the time it was impossible to effectively correct coma and prevent loss of contrast, so the Planar design was set aside until after WW2.

Those were the days of glory for Tessar- and Sonnar-type lenses, which were already capable (especially the Sonnar) of better contrast and undetectable coma.

While Leitz had their first try already before the war with the 50mm f2 Summar, Zeiss relied on their Tessar and Sonnar designs until the availability of lens coatings and modern lanthanum-enriched glass created the conditions to fully exploit the double Gauss potential.

During the 30s Zeiss introduced some Biotar and Mikrotar models based on a double-Gauss design.

These were however specialist macro lenses for high magnification photography, and represented a negligibly small niche.

In the early 50s Zeiss could count on the two great mathematicians Johannes Berger and Gnther Lange, who shortly preceded the arrival of the famous Erhard Glatzel.

Berger and Lange systematically studied the Planar formula and its variables and soon they were able to design several lenses for medium- and large-format cameras, which were later very highly regarded e.g.

Planar 3.575 and 2.880 for Rolleiflex, the Planar 2.880 for Hasselblad, and several models for Linhof.

Curiously though, the wide range of Zeiss 35mm cameras was still being fitted with Tessar and Sonnar lenses.

Already in 1953 Berger and Lange had calculated a fast-aperture Planar for 35mm cameras, but its launch was being delayed.

The first Planar lenses for 35mm cameras Prototypes for the Contaflex system The first Planar for small format cameras to enter production was the famous and most highly regarded 50mm f2 equipping the Contarex I Cyclope in the late 50s.

However, Zeiss managers initially wanted the first Planar to equip their Contaflex cameras.

This fixed-lens SLR system was mature and refined, quite popular and very well regarded.

Its excellent Tessar 2.850 lens was capable of brilliant optical performance.

Ernostar 85Mm 1.8