Jupiter-8 2/50 - kit lenses for cameras Zorkiy-4, Zorkiy-4K, Mir. They were produced in light and black versions of the cases, they have a less intense color of lens enlightenment, and there is no letter “P” on the case in the marking, as in earlier releases. Jupiter-8 2/50 is still the Zeiss Zonnar. However, it was already converted for the production capabilities of the USSR. The design of the hull and the mechanics of the helicoid has been redesigned and greatly simplified. The helicoid can be lubricated with tight rotation without disassembling the lenses. Also, if you unscrew the helicoid stopper, you can reduce the focusing range and turn the lens into a macro.
|Focal length, mm||50 (75)|
|Maximum aperture, f/||2|
|Installing on FF/Crop||Yes|
|System||Any mirrorless camera through adapter with M39|
Lens for rangefinder (mirrorless) cameras only with M39 screw connection. This lens is installed on modern SLR and mirrorless cameras through the appropriate adapter. Read the article about adapters.
Known variants of Jupiter-8 2/50
- Carl Zeiss Sonnar 1: 2/5 cm - original German production
- Zonnar Krasnogorskiy - "ZK" 1: 2 F = 5cm P... The first experimental series of the lens is a copy of Carl Zeiss Sonnar. It is found both under Zorky-FED and under Kiev-Kontax, in different versions of the cases.
- Jupiter-8M 2/50 bayonet Contax RF for cameras "Kiev". The standard lens for cameras Kiev-2, Kiev-3, Kiev-4 was produced at the Arsenal plant in Kiev.
- Jupiter-8 1: 2 F = 5cm P light with focusing drive. Regular lens of the camera Zorkiy-3M. Production Krasnogorsk.
- Jupiter-8 1: 2 F = 5cm P light with focusing ring. Regular lens of the camera Zorkiy-3. Production Krasnogorsk.
- Jupiter-8 2/50 in a light unpainted case. Production Krasnogorsk.
- Jupiter-8 2/50 in a black case. Production Krasnogorsk.
- Jupiter-8 2/50 in black case Made In USSR (example photo). Production Krasnogorsk.
- Also, Jupiter-8 2/50 was produced in the version for a photographic enlarger
On Sovietcams.com Jupiter-8 has 17 known modifications that differ in the design of the frame, enlightenment and marking.
- Jupiter-8M 1: 2 F = 5cm M mount Contax RF for cameras "Kiev"
- Jupiter-8 1: 2 F = 5cm P light with focusing drive
- Jupiter-8 1: 2 F = 5cm P light with focusing ring
Jupiter-8 2/50 characteristics
Aperture: 1: 2
Focal length, mm: 50
Angular field of view, city .: 45
Linear field of view, mm: 43
Weight: 130 g
Format: 2,4×3,6 cm
Jupiter-8 2/50 lens diagram
The layout of the Jupiter-8 is different from the original Zeiss Sonnar f/2 layout. A little, but still different. In the design of the optics, heavy crowns, which have a high refractive index, characterized by large (more than 50) values of the average dispersion coefficient.
Jupiter-8 2/50 MTF
Specification resolution (center/edge): 30/14 lines/mm, however, it is slightly less on the MTF chart. In fact, the sharpness of the lens for photography is more than enough. True, an open aperture has a very large difference in sharpness from the center to the edge.
Unlike early releases, these lenses are marked as “Jupiter-8 2/50 serial number and logo of the manufacturer". In the case of the black version of the Jupiter-8, the inscription Made In USSR is additionally applied, since the lenses with the markings in the Latin alphabet were exported. Light. Cheap. Your. Silver unpainted or black body, thin ribbed focus and aperture rings. When focusing, the front of the lens rotates around its axis. This must be taken into account if you suddenly have to use a fixed polarizing filter. Jupiter-8 in unpainted housings had the same body design as the early lenses with German markings, while the later ones were already reworked, simplified and began to be painted with black paint.
Thanks to the maximum aperture of f / 2, Jupiter-8 is fast. At the same time, it has a very low weight. Jupiter-8 has an older super-aperture brother Jupiter 3. Jupiter-3 and Jupiter-8 differ in the optics scheme, but have a common root - a body kit in the form of additional elements is assembled around a generalized triplet. The generalized triplet first appeared in 1916, and Ludwig Bertele's development of the Sonnar circuit was an improvement on the Ernostar lens circuit. Ernostar pioneered the f/1.8 aperture, which allowed shooting in places where flash could not be used. In the future, the main drawback of Ernostar was corrected in Sonnar. These lenses have more contrast and better image quality than their predecessor.
Focusing is carried out within the range from 1 meter to infinity, moreover, infinity should come after 20 meters. In practice, it has overrun for infinity, portrait depth of field.
Aperture 9 blades. The lens draws round highlights in the out-of-focus area. However, light sources turn into scales in the background, and this is annoying. Maximum diaphragm - f / 22, there is a depth of field calculator on the body. The lens can be set to sharpness on the scale, and shoot with it, as they say, "from the waist" and without looking through the viewfinder.
The aperture ring is made according to the same principle as that of the Industar-50 lens, i.e. small and uncomfortable, plus the lubricant on the ring should be thinner than on the focusing ring, otherwise we are guaranteed to knock out sharpness when adjusting the aperture.
Image quality Jupiter-8 2/50
The best time to take photos with this lens is morning, overcast day, evening. Sharpness is satisfactory, but open only in the center, color reproduction without distortion in sunny weather. There is a soft effect on the open aperture. The lenses of Jupiter-8 2/50 have a light blue coating, noticeable at a large angle. Most likely there is enlightenment, but, so to speak, basic. Because a multi-coated lens has a corresponding mark on the body, and a more pronounced lens color. But, unfortunately, things never came to the multi-enlightenment of these lenses. Early releases have a deeper color of enlightenment, and a corresponding mark on the case. That is, early versions of the lenses of this model, in theory preferable in use than later ones, however, having shot both of them, I did not see much difference.
Body, build quality
The body of Jupiter-8 is aluminum, the seat for light filters is very easily deformed even from light blows. The lens has an unpainted back, which can affect the picture quality, as bare metal creates reflections. The diaphragm ring has a free play, rotates poorly. However, this is not the case with freshly lubricated lenses. When adjusting the aperture, sharpness is lost, since the tight movement of this ring drags the rest of the lens with it.
Use on digital cameras
Jupiter-8 2/50 m39 will easily mount on mirrorless cameras such as Sony NEX, Canon EOS M, through the appropriate adapter. At the same time, the lens will have an angle of view equal to the equivalent of an 80mm lens for a full-frame camera due to the crop factor of the APS-C matrices. On DSLRs, it is possible to use Jupiter-8 as a macro lens, since the focal length of rangefinder cameras is smaller. Mirrorless digital camera adapters:
- Nikon 1 adapter M39-Nikon 1.
- Pentax Q adapter M39-Pentax Q.
- Sony NEX and Sony Alpha E-mount adapter M39-Sony E (M39-Sony Nex).
- Four Thirds, aka 4/3 (Olympus, Panasonic) adapter M39-4 / 3
- Micro Four Thirds - Olympus, Panasonic, Kodak, Xiaomi with bayonetohm Micro 4/3 (Micro 4: 3) adapter M39-Micro 4/3.
- For cameras with bayonetohm Fujifilm X adapter M39-Fuji X.
- Samsung NX adapter M39-Samsung NX.
- Adapter ring M39-M42 can be purchased here.
- Adapter M39-EOS R
Attention! A Jupiter-8 lens on a 1.5 crop will have an angle of view equal to 1.5x50 = 75 mm lens for a full frame, and an aperture equivalent of f / 3. The total is 75mm f / 3. The easiest way is to install Jupiter-8 through an adapter to a mirrorless camera such as Sony NEX or Sony a7. Read the article about adapters.
- Good image quality, sharpness at apertures from f / 4 and color
- 50mm - popular focal length for stock lens
- The lens is not afraid of frost and bad weather. It is made of metal and glass.
- Will fit on any digital camera except DSLRs.
- You can get a warm tube photo simply by shooting in BW + contrast or BW + yellow / red filter.
- An open aperture produces a strong veil effect, plus the body is unpainted on the camera side. You can fix it by painting it black, or you can leave it that way and apply it as an artistic effect.
- Weak edge sharpness.
- Scales in bokeh. If there are light sources, then after the ninth to tenth frame when viewing it starts to enrage, as it distracts from the subject.
- Weak enlightenment. Areas exposed by light sources cannot be pulled out in post-processing. Well, it's not that a flaw - just a feature of the optics of the past.
Focal length alternatives for Jupiter-8
Main probable use Jupiter 8 - these are bust portraits. The lens is not suitable for video shooting. management is far from the best. The analogs for digital cameras presented below are the legacy of the past, which is still in use today.
A complete analogue of Industar-22, since the 60s, has been produced for SLR cameras, and in its mass, it is quite common. Optical qualities are not bad, with the exception of certain nuances in the work.
Helios of the latest modifications will have better performance due to a more efficient f / 2 aperture (no moiré), and older Helios models are more resistant to backlight.
It is a good choice for leisurely shooting portraits with shallow depth of field and artistic background blur.
Photo examples Jupiter-8 2/50 black
Black Jupiter-8 2/50 on a Sony A7 camera. Focusing by focus peaking, through the viewfinder. In the case of shooting at an open aperture, I had to use the standard zoom function.
Photo examples Jupiter-8 2/50 made in USSR (black)
The export version, as it seemed to me, on the open one has a worse image quality than the version with the Cyrillic alphabet in the name. But this is most likely due to his condition. Something clatters inside. However, at apertures other than fully open - the image catches up with the version "for the domestic market".
Examples of photos on Jupiter-8 2/50 silver
The lens, which I got in a terrible state, has mold and fungus inside, but there is no living place on the body. In general, after CLA the glass acquired working properties, the turbidity from the glass disappeared, and a shine appeared on the aluminum case. Now, of course, it does not shine as it did from the very beginning, and the lens coating still has signs of degradation. Despite this, you can shoot on it, which I periodically do. This glass gives an interesting color.
Jupiter-8 2/50 on a DSLR
Jupiter-8 on canon, Nikon and other SLR will only work as a macro. Since there were no samples from Jupiter on the DSLR, I installed an early release Jupiter-8 on the M42 - NEX adapter and shot on the Sony A7M2 to simulate the picture as it would look on the SLR camera. Since rangefinder lenses are designed for a working distance of 28,8mm, and SLR cameras have a longer distance (Zenith-E, for example, and the like - 45,5mm), the image plane shifts, and the lens turns into a macro. At the same time, the focus ring does not make any sense to rotate to achieve sharpness. It controls the sharpness in a very small range. You have to focus by moving the camera.
Inexpensive lens from rangefinder cameras. In the secondary market, there are copies worth 300-500 rubles, in excellent condition and with a camera.