Rare 13 blades Helios 44 2/58 M39 M42 Lens Zenit Soviet.

Condition:
The lenses are in pristine, essentially new condition with minimal prior use. The optics are flawless, devoid of any defects, ensuring impeccable performance. The focus operates smoothly, guaranteeing seamless adjustment.

Description:
Featuring an aperture and focal length of f2/58, an angular field of view at 38, and constructed with 6/4 lenses and elements, these lenses boast exceptional quality. The light filter mating thread measures M49x0.75, while the closest focusing distance reaches 0.5 meters.

The lenses exhibit impeccable glass quality, free from fungus, and maintain outstanding cosmetic condition. Optics are pristine, without scratches, and bear absolutely minimal cleaning marks. The 13-blade configuration delivers stunning bokeh, a feature unique to this rare version of the lens.

Included in this offering are both caps, along with a finely adjusted M39-M42 adapter ring for seamless compatibility with M42 cameras and adapters. The lenses offer full focusing range, encompassing infinity, catering to SLR cameras across various brands.

Compatibility Guide:
- Canon: Requires an M42-Canon EOS adapter for Canon EOS cameras with EF/EF-S mounts.
- Nikon: Utilizes an M39-Nikon F adapter for Nikon DX/FX cameras, Fujifilm, and Kodak cameras with a Nikon F bayonet.
- Pentax: Compatible with an M39-Pentax K adapter for Pentax cameras with a K bayonet.
- Sony/Minolta: Requires an M39-Sony A adapter for cameras with Sony/Minolta A bayonet.
- Olympus/Panasonic: Utilizes an M39-4/3 adapter for cameras with a 4/3 bayonet, suitable for mirrorless cameras.

Additional Compatibility:
For Sony NEX and Sony Alpha cameras with an 'E' bayonet, an M42-Sony E adapter is required.
For Micro 4/3 bayonet cameras (Micro 4:3), the M39-Micro 4/3 adapter is needed.
For Canon EF-M bayonet cameras, the M39-Canon M adapter is compatible.
For Nikon 1 series cameras, the M42-Nikon 1 adapter is required.
For cameras with an X bayonet, the M39-Fuji X adapter is necessary.
For Samsung NX mount cameras, the M39-Samsung NX adapter is essential.
For Pentax Q bayonet cameras, the M39-Pentax Q adapter is compatible.
For Leica M bayonet cameras, utilize the M39-L/M adapter.

Should you have any inquiries regarding compatibility or adapters, feel free to ask questions in the comments section.