The Carl Zeiss Jena Tessar 50mm 2. The Tessar construction dates back to and was computed by the German physicist Paul Rudolph. The Tessar lens construction was one of the most widely used lens construction. It was used for for large format cameras, enlargers, compact cameras, twin lens reflex as well as SLRs.
Carl Zeiss Jena Tessar 50mm 2. Light and compact it can deliver very sharp images paired with good ergonomics. The Tessar lens is often available at an unbeatable low price and offers a lot of bang for the buck. From landscape to artistic to portraiture photography — the Tessar is able to deliver good results.
Some people argue that it is sharper than the Carl Zeiss Pancolar 1. It is true that the Tessar is a good performer when it comes to sharpness, especially when shot above f5. With its minimum focusing distance of only 35cm, it is also a nice lens to use for macro shots. The bokeh has a slight twirl to it not as much as the 80mm Biometarwhich can be very appealing for portraiture. These lenses go for about 50 dollars on Ebay and at this price it is a bargain deal.
Outdoors the Tessar will perform great but indoors, when the lighting conditions are not excellent, you might get into trouble with that slow F2. I would rather use the Carl Zeiss Pancolar 1. Also, the build quality is not on the same level.
The Tessar lens was was first designed in and presents itself in all different shapes and sizes. As with most other Carl Zeiss lenses, the Tessar lens is available both with and without any coating. The pre-war Carl Zeiss Tessar 2. Some of these lenses were also created in Leica M39 mount. These lenses are nowadays rather collectible. They are un-coated collapsible lenses that represent a fine example of early lens craftsmanship made for 35mm film.
The lens formula was calculated by Dr. When coated they are marked with a red T. The early version is probably one of the smallest and lightest 50mm prime lenses around, weighing only grams.
In case you want to use the M42 type with an adapter: this early version of the M42 mount is slightly extruding and does not fit most adapters I have tried.We repair our entire current product portfolio as well as a large selection of historical products. If your product is not listed in the form below or you are unsure, please contact our customer service. In order to take advantage of the ZEISS manufacturer's warranty, a proof of purchase of your product is absolutely necessary.
Please upload proof of purchase in the form below or attach proof of purchase to your product. In order to be able to process your repair case, please select the product for which you need help:. ZEISS guarantees for a period of 2 years from the date of purchase that the purchased lens is free from defects in material and workmanship.American horror story season 2 episode 2 bg audio
An extended warranty for one additional year is available by registering the product within 4-weeks of the date of purchase at the ZEISS product registration. The ZEISS manufacturer warranty applies in addition to your legal right to claim warranty towards the seller.
This warranty is not transferable. In such cases, please consult your dealer.
Carl Zeiss Jena Lenses
During the period of manufacturer's warranty, defects will be removed free of charge either by repair or replacement at the discretion of ZEISS. Claims under warranty shall not apply if the defect is attributable to improper treatment, including any interference with the product by unauthorized workshops or persons.
Service and support for these lenses is therefore provided by Sony. The addresses of authorised Sony repair services in your country can be found in the warranty documents provided with your lens or camera or on the Sony Service website for your country:.
Should you have any questions regarding repairs and warranty details for these lenses or cameras, please contact Sony Support directly. ZEISS is unfortunately unable to carry out repairs on these products. Legacy lenses and cameras e. Some independent specialist workshops offer maintenance and repair services for these products. On request, we would be pleased to send you a list of several workshops in Germany and the USA who may be still able to repair your lens or camera please take advantage of our contact form.
Please understand that we have no influence on either the quality of any repairs carried out or the pricing policies of independent workshops. It is also quite possible that the repair of such legacy equipment may no longer be possible due to the lack of replacement parts. It is also possible that your photographic equipment dealer may be able to recommend service workshops in your region or country for the repair of your legacy equipment.
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Dear Customers, In the light of the current circumstances, we all share the overarching aim to protect the safety and health of our customers, employees and their families to provide our share to flatten the pandemic curve. Accordingly ZEISS initiated some adjustments in the operations that are affecting our service business. Please understand that our current response and repair times are longer due to this activities. Informationen about the repair process. Service Points. The addresses of authorised Sony repair services in your country can be found in the warranty documents provided with your lens or camera or on the Sony Service website for your country: www.Thornwood, NY— Zeiss is celebrating its th year of producing camera lenses.
The first camera lens left its Jena production facility on March 21, For us, this tradition is an obligation to continue offering the highest quality and developing pioneering new technologies. Zeiss was founded as a workshop for precision mechanics and optics in the German city of Jena in From that point on, Ernst Abbe, who was responsible for many developments in the early days of the company, started to expand the product line and added camera lenses as a new business sector.
The lenses comprised glass materials, displaying enhanced optical properties, produced by Otto Schott for the first time in the s. Although the main methods of photography had been discovered about 50 years previously, it was not until this period that they were widely used. Zeiss developed new types of camera lenses that were designed to be faster than previous models. Paul Rudolph, a scientist who worked at Zeiss, created the Anastigmat camera lens that was produced from on and renamed the Protar in Tessar lenses are used, for example, in many Sony cameras and Microsoft smartphones as they offer high image definition on a tiny area.
This surface coating reduces distracting reflections and stray light. Eight years later, Zeiss developed a process for measuring the image quality of lenses through MTF modulation transfer function curves that is still used by numerous manufacturers today.
Later, inthe introduction of CAD computer aided design in the development of lenses allowed much more complex constructions than with manual design.
July 20, marked a major milestone: the first landing on the moon. Because mass-produced lenses do not work properly on the moon, this lens was developed specially for the mission. The mounts feature pressure-compensating openings, and the operating elements were modified for gloved users. Winfried Scherle, head of the Consumer Optics business group at Zeiss.
The image performance remains constant over all distances. Zeiss employees about 25, employees and generated revenue of 4. Saturday, April 11, Free Subscriptions Current Issue.Carl Zeiss of Germany is among the most renowned of the lens manufacturers. It's part of the Carl Zeiss Foundation, which also owned the Zeiss Ikon camera maker from its foundation in until it disappeared in In its long history it equipped many camera makers.
The company was founded in Jena in and called Carl Zeiss Jena. It produced microscopes and the refractometer, an optical instrument to measure the index of refraction of optical glass, developed by Carl Zeiss' partner Ernst Abbe. After Carl Zeiss' death inAbbe founded the Zeiss Foundation and built up its photographic optics branch and reduced daily working time of the company's employees to 8 hours. Koritska MilanoE. Krauss ParisE. That way Zeiss avoided too fast growth of its own production facilities.
In Zeiss bought the camera maker Palmos A. In the camera making daughter company was merged into the ICA group which later became part of Zeiss Ikon. One part was recreated in West Germany and based in Oberkochen, and kept within the Zeiss Foundation.
Review: Carl Zeiss Jena 35mm 2.4 Flektogon
The other part remained in Jena, but soon lost the right to use the traditional names, like the brand name Zeiss and the related famous lens names. In the Western countries it was known as aus Jena means from Jenaand used obvious abbreviations, or other names reminding the past for ex. T for Tessar, S for Sonnar. In the countries of the Eastern block, they continued to use the full names. Carl Zeiss Oberkochen made lenses for the Western Zeiss Ikon after the war, but they have also made dedicated lenses for other camera marques.
They continue to do so, notably for Rollei and Hasselblad. The Zeiss lenses for the Hasselblad series of medium format SLR cameras are known for their high quality, precision tolerances, resolution, and color rendition, and have been used by many well-known photographers.
InKyocera ceased all camera production and discontinued the marketing of Carl Zeiss lenses. Very recently the Carl Zeiss foundation has revived the Zeiss Ikon name for a new type of rangefinder camera, with lenses designed by Carl Zeiss and manufactured by Cosina in Japan.
Sony uses Zeiss lenses for its digital cameras. A legandary wide angle lens, and considered to be one of the best wide angle primes in M42 mount. Zeiss lenses just have that something special, and colour reproduction is considered to be the best in this class. This lens is sharp wide open, and we have yet to encounter Chroma in any picture. A bit older and slower than the F2. Legandary performance, and considered to be THE 50mm prime in M42 mount.Important : The photos are an integral part of the description, they tend to reflect each object as closely as possible to reality.
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Carl Zeiss Jena Tessar 50mm 2.8
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Dimension: See last photos. Special conditions of sale: 1. Each object is packaged with the utmost care and according to its different technical characteristics, which guarantees you a perfect packaging resistant to a.The Flektogon 35mm 2. It is the predecessor to the Distagon design still used for many modern lenses.
Let us find out in this review. Most of the sample images in this review can be found in full resolution here. There is quite a bit of background information on the Flektogon series to be found here. The design principle of the Flektogon lenses is the same as what is today usually referred to as retrofocus design.John deere 332 skid steer engine
This sample has quite a nice build quality. But as I am not sure about sample variation rumors are that there is quite a bit and this lens might have been serviced recently I cannot speak about CZJ lenses in general here. The click stops are a bit noisy, so this might not be your best choice if you are into video shooting.
The lens is made from a mix of metal and high quality plastics.Destiny stories quora
All markings are painted and engraved. The lens is rather small and wide open there is strong vignetting of roughly 2. This is comparable to other small 35mm lenses at shared apertures. Good news is the lens barely has any focus shift issues. The performance at the minimum focus distance in the center is really astonishing. Even wide open there is nothing to complain about.
There is also pretty much no focus shift, which is present on so many other fast 35mm lenses. Flare resistance stopped down is quite good for such an old lens. While there is a loss of contrast, ghosting is not really an issue. Still I have seen much worse from older lenses like this and for web usage you could even use it for handheld wide open cityscape shooting during blue hour without completely ruining the shot.
Whilst not as bad as the Voigtlander 35mm 1. Bokeh is a subjective matter, yet many people claim this lens has rather good rendering in that regard, so I will go a bit more into detail here. In general I think the bokeh is not that bad, as the transition zone is comparably smooth for a 35mm lens.The Tessar is a famous photographic lens design conceived by the German physicist Paul Rudolph in while he worked at the Zeiss optical company and patented by Zeiss in Germany; the lens type is usually known as the Zeiss Tessar.
A Tessar comprises four elements in three groups, one positive crown glass element at the front, one negative flint glass element at the center and a negative plano-concave flint glass element cemented with a positive convex crown glass element at the rear. Despite common belief, the Tessar was not developed from the Cooke triplet design by replacing the rear element with a cemented achromatic doublet.
Paul Rudolph designed the Anastigmat with two lenses cemented in Later, Rudolph thought that a narrow airgap in the form of a positive lens would correct the spherical aberration as did HL Aldis in and that this device was much better than the lenses cemented. In addition, this allowed the photographers to have greater freedom when choosing the lenses. In he separated the lenses in the Anastigmat to produce the fourth element, a group of four Unar lenses which replaced the two interfaces cemented by the aforementioned device.
The frontal element of the Tessar, like that of the Anastigmat, had little power since its only function was to correct the few aberrations produced by the powerful posterior element. The set of interfaces cemented in the posterior element had 3 functions: to reduce the spherical aberration; reduce the overcorrected spherical-oblique aberration; reduce the gap found between astigmatic foci . Millions of Tessar lenses have been created by Zeiss and other manufacturers, and are still produced as excellent intermediate aperture lenses.
Actually, Zeiss has a large monopoly on this type of construction, because Rudolph's patent was very general . His only claim was:. Many workers tried to copy the design of the Tessar lenses but due to the limitations of the patent, they could not. The simplest way was to use three cemented elements on the back instead of two. Inmany designs of this type appeared, for example "Ross Xpress" by J.
Stuart and J. InE. Wandersleb and W. Tessar are frequently found in mid-range cameras, as they can provide a very good optical performance at a reasonable price, and are often quite compact. They are also frequently used in photographic enlargersas they provide more contrast than many competing lens designs due to the limited number of air-to-glass surfaces. All lenses can be focused by moving the lens assembly towards or away from the film "unit focusing"and the Tessar is no exception.Models of plasma membrane ppt
Some lenses, including Tessars, can be focused by moving lens elements relative to each other; this usually worsens optical performance to some extent, but is cheaper to implement. As the front element of the Tessar has three times the power of the whole lens, it must be moved one-third of the distance that the whole lens would need to move to focus at the same point.Biometar Carl Zeiss Jena 80mm f2.8 - Medium format lens on an APS-C sensor?
The large airspace between the first and second elements allows focusing by moving the front element only; as the displacement is small compared with the airspace, the adverse effect on image performance is not severe. The front-element-focusing Tessar, cheaper than a unit-focusing lens, was widely used in many midrange Zeiss Ikon cameras.
Only licensed manufacturers were allowed to use the brand name "Tessar". However, Tessar-type lenses were widely made by many manufacturers under different trade names. C and GT-E is the fastest and widest Tessar type lens achieved so far by using lanthanum glass elements. The picture quality was outstanding. After WW2 the Zeiss factory at Jena ended up in East Germany behind the Iron Curtain, and developed a popular camera named the 'Werra' after the river which runs through the town.
This used Tessar lenses, which were marked as "Zeiss-Tessar", resulting in legal action from the Zeiss company in Western Germany. For a while the Werra Tessar lenses were marked simply as "T", but eventually they were allowed to market the lenses as "Carl Zeiss — Jena Tessar".
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