This Praktisix II was manufactured between and, but the Tessar lens shown here was last produced in the Praktisix mount in February It would have been fitted to the original version of the Praktisix.
When buying any camera with inter-changeable lenses, bear in mind that the lens may not be the one that was on the camera when it was new. Most Zeiss lenses other than the mm mirror lens had the same design style, so when changes of styling were introduced, they were phased in to all other Zeiss lenses except the mirror lens. Carl Zeiss lens numbersĭesign variations. More on Distortion.Ĭarl Zeiss – A History Of A Most Respected Name In Optics With some of this content dating back to the times when slow dial-up Internet access was the norm,. Measures in P-Mpix sharpness performance of a lens-camera combination. Measures the overall performance of a lens-camera combination for a challenging indoor lighting condition. Then in the selection box, you can check up to three lenses at a time to compare their measurements. It’s clear that, with some care, this lens from the nineteenth century can still give satisfaction notice how the lens’ formula, featuring only two lenses groups, allows a good contrast even without coating.Ĭhoose the lenses you want to compare from the results below.
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The lens features a pleasant vintage appearance, showing all its years on the side of the barrel can be seen the The maximum aperture of The various components disassembled and displayed in sequence note how the iris diaphragm, comprising 10 blades and nearly round, appears partially closed even at full aperture, a solution that reduces the inner flare also the black matt passivation of the blades is a truly actual solution which, curiously, was not present in much more modern lenses, such as the Zeiss for Hasselblad and Contarex of the ’60s, equipped with diaphragms shining like mirrors As history teaches, Paul Rudolph combined the rear doublet of the Protar with the front group of the Unar, thus obtaining the immortal Tessar.
The lens proposed here with the main statements of his patent, registered in April, is small in size and was originally fitted to a mahogany wood plate the barrel is made of burnished brass and, as usual, the stopping-down references for the iris actually indicate the diaphragm hole in millimeters notice how the data in the front ring are manually carved, removing the black lacquer and displaying the bare brass. Marco in Venice, after the collapse of, was inaugurated with great pomp: in fact, this Tessar came out of Jena works in April-May of, just years ago. At the same time the famous Burgess Shales were discovered in British Columbia, with their exceptional Cambrian fauna preserved so well that, for the first time, we studied the soft parts of the trilobites, a distant event which now belongs to the history of paleontology. The first set of objectives rightly honors the Tessar type project. This article required a lot of preliminary job for researches as well as acquisition of unusual pieces, in some cases expensive, and I want to consider it a sort of Christmas gift dedicated to my many friends and enthusiasts of this topic.
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