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Helios lens

Soviet super-fast Jupiter-3 1.5/5cm P

High-aperture standard lens for rangefinder cameras such as FED-Zorky-Leica (m39) and Kiev-Contax (Contax mount). The first samples of the lens were assembled at the Krasnogorsk Mechanical Plant (KMZ) from components Carl Zeiss Sonnar F 1.5 50 mm and they were called Zonar Krasnogorsky, and later Jupiter-3. Lenses were assembled from German trophy components until the glasses ran out, until 1954. After the optical scheme was optimized for the domestic glass grade, the frame was also redesigned.

From 1954 to 1955, the updated Jupiter-3 was produced at KMZ. And already in 1956, production was transferred to the Zagorsk Optical-Mechanical Plant (ZOMZ). Then, from the mid-70s, Jupiter-3 again changed its registration, to the Valdai plant "Jupiter" - where it was produced until about 1986.

  • The focal length is 52 mm.
  • The maximum aperture is 1.5.
  • The minimum aperture is 22.
  • The number of aperture blades is 13.
  • The number of lenses / groups is 7/3.
  • The minimum focusing distance is 1 m.
  • Resolution center / edge - 30/14 lines per mm.
  • Light transmission - 0.80.
  • The working distance is 28.8 mm.
  • Attachment attachments - threaded m40.5.
  • Optics mount - M39.

Ergonomics and design:
Jupiter-3 is a fairly compact high-aperture lens. The lens barrel is made of aluminum, a pleasant weight and a sense of reliability. It would seem that the larger size has a negative effect on ergonomics, but no. Classic layout of controls 50-60s. years has a positive effect on the usability of the lens.

The focus ring is not wide, but centrally positioned, thus providing normal focusing access. The fingers of the hand normally hold the ring due to the relief plane; the course of the helicoid is slightly less than half a turn, approximately 170 °. This is not always enough for accurate focusing at an open aperture.

The aperture is also controlled by a ring located on the front of the lens. The diaphragm closes without steps, it is possible to set any value, including an intermediate value. The Jupiter-3 diaphragm itself is multi-lobed and consists of 13 pieces; at all values ​​of the aperture, the petals form a circle without notches

The lens was produced with two types of attachment to the camera, Contax-Kiev and M39. The M39 threaded mount is also found in the first domestic lenses for SLR cameras - it is often called the universal M39. But there is a big difference between the working segments of the M39 for rangefinder cameras and the M39 for SLR cameras, namely 28.8 mm for the rangefinder version versus 45.2 for the SLR version. The 6.4 mm difference does not allow installing rangefinder optics on SLR cameras while maintaining infinity, focusing is possible only in macro mode. For this reason, Jupiter-3 m39 can be installed exclusively on mirrorless cameras using an adapter.

Artistic qualities and examples of photos:
Jupiter - 3 forms a very beautiful, plastic picture with good contrast, has a "characteristic" pattern. An amazing combination of softness and sharpness, beautiful bokeh - made it very popular with portrait photographers. The "German" versions of this lens (manufactured before 1955) are especially appreciated and distinguished by their design.

For those who like to shoot video, the lens will serve as a good artistic lens, as mentioned above, a big plus of the lens is a smoothly closing aperture, without steps and jumps. The video will not show sharp jumps and changes in exposure, again everything is very soft and smooth.

Jupiter-3 1.5 / 5cm P is an excellent compact high-aperture lens that produces an absolutely amazing picture (excellent image plasticity, soft and branded blur, aperture blackened with 13 blades, rich colors). For mirrorless cameras, the lens is a great find, and for owners of SLR cameras, it will become an assistant in macro shooting.

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