I bought a broken Braun Super Paxette II BL camera, but the purpose of the purchase was the four lenses that came with the camera. Three of them are lenses for this Paxette camera: the Staeble-Telexon 135/3.8, the Staeble-Lineogon 35/3.5, the Steinheil München Quinon 50/2. The fourth lens was a surprise to me.
It is a Meyer-Optik Görlitz Helioplan 1:4.5/40 (with the red V-mark):
The lens from the 1950s. Nowadays, it seems to be quite slow, but it has a rare optical design.
It is a simple dialyte lens with 4 elements in 4 groups, almost symmetrical.
Although the lens came to me with the Paxette camera, it is not related to the Paxette series. My copy has the M42x1/45.5 mount. Of course, this mount is more universal than the "Paxette" M39x1/44 mount.
The Helioplan 40/4.5 is a non-retrofocus lens. The 40mm focal length is almost the limit for non-retrofocus lenses on 35mm SLR cameras. So the rear part is quite protruding. You should check if the mirror of an SLR camera doesn't hit the rear part of the lens.
The aperture has 10 blades. In some values, the aperture has a star shape.
This is a preset aperture lens. The aperture ring is single, but it's outer part can be slid forward to set the limit of the aperture closing (reminds me of the Pentacon 30/3.5).
It locks at the following positions: f/4.5, f/5.6, f/8, f/11, f/16, f/22. The aperture ring rotates from f/4.5 to the locked position (marked by the red dot) without clicking.
The filter thread is 40.5mm. The front part of the lens (with the filter thread) doesn't rotate during focusing. The minimum focusing distance is about 0.5m.
The lens body looks bad (due to metal oxide), but all mechanics (aperture, focusing) work fine. Ironically, even in this condition, the Helioplan 40/4.5 (especially for M42x1/45.5) costs more than I paid for all four lenses and the camera.
See also related notes:
- Filter thread: 40.5x0.5 vs 40.5x0.75 (2024-09-13)
- Meyer-Optik Helioplan 40/4.5: Samples [1] - FF - f/4.5, f/11 (2024-05-13)
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