Lens blocks came to the USSR directly from Zeiss experimental workshops after the war due to reparations. There were many 2 / 50mm Zonnars in that batch (they were already set in Russia on Fed-Zorkiy and Zorkiy, making frames of their own design), some 1,5 / 50mm, and very few rarer lenses, including Olympia-Zonnar.
It is believed that after glass began to be made in the USSR, Jupiter began to be inferior in optical quality to its ancestor, especially at aperture 2.8. Export options where the name Jupiter is written in Latin are better proved.
In the USSR, Jupiter-6 received high marks, for which he was awarded the First Degree Diploma of VDNH of the USSR. However, competitors in the vast expanses of the Union simply did not have a lens.
Focal length - 180 mm.
The maximum aperture is 2.8.
The minimum aperture is 22.
The number of lenses / groups is 5/3.
The minimum focusing distance is 2 m.
Resolving ability center / edge 35/16 lines per mm.
The number of aperture blades is -10.
Threaded mount optics - m39.
Type enlightenment - single layer.
The working segment is 45.2.
Actual weight is 1500 grams.
Ergonomics and design:
One and a half kilograms of aluminum and glass is not a 55-200 plastic rattle for you. The lens has been made for centuries, although some backlash of the lens block along the optical axis is observed, design features. The large weight of the Jupiter-6 lens affects the shooting process, hands get tired and begin to tremble over time. This factor was taken into account, the lens can be mounted on a tripod or monopod using the standard mount.
The focus ring is located in the center of the lens, thin but has corrugation in the metal. Aperture control rendered to the front. The aperture ring rotates without steps, that is, you can choose any aperture value and what is important for people who shoot video, smooth closing (not abrupt). The second ring is the diaphragm preset mechanism.
The diaphragm consists of ten blackened matte petals. At the covered aperture values, they form a hole in the form of a star.
The lens is very versatile:
1. It can be used on a medium format camera by placing the lens block in a helicoid for medium format.
2. On movie cameras of any format by placing in the corresponding helicoid.
3. Converting to Nikon takes 5 minutes. The lens easily spins into two parts (approximately like Helios-44) there are no stoppers. Between the lens block and the body gasket -4mm, it can be set to infinity. Very simple and versatile design. Today, the lens is very popular with movie operators, which led to the complete disappearance from the secondary market.
The picture from Jupiter-6-2 is very good. Soft, plastic, voluminous, moderately sharp with very beautiful bokeh. The lens for portraits is almost perfect. It transfers halftones well and hides skin defects.
The lens has an interesting color rendition. A slightly reduced contrast is not a flaw, but rather a virtue. Thanks to this color rendition, the images are “artistic” and the colors are more “vibrant” in non-natural lighting conditions (for example, fluorescent lamps or LED lamps, which are often installed indoors). If you still need contrast, then you can tighten it up by software.
Jupiter-6 can be called the best 180 mm lens in Soviet optics. Excellent color reproduction, high aperture and sharpness, everything is on top. It has a very reliable construct - made for centuries. With all this, it shows a beautiful pattern with nice bokeh. It transfers halftones well and hides skin defects. It’s quite difficult to find Jupiter-6 in good condition these days.