Helios-44
![](../I/m/ZeissBiotar58f2-1939text.svg.png)
Zeiss Biotar optical formula
Helios-44 is a Soviet copy of the Carl Zeiss Biotar 58mm ƒ/2 lens produced under the Helios lens brand.[1] The Lens is currently made in Russia for the M42 lens mount.
Specification
- Distance scale: 0.5 m to ∞
- Aperture: f/2 - f/16
- Focal Length: 58 mm
- Mount: M42, Pentax-K, Zenit-D
- Mount thread for Attachments: M52 x 0.75
- Weight: 230 g
- Resolution: 50/30 lines per millimeter
References
- ↑ ""Гелиос-44", 2/58, КМЗ, ММЗ, Валдайский з-д "Юпитер"". Archived from the original on
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