HELIOS-44M-4 2/58 has a preset aperture ring. It allows you to select one of the fixed values: F/2, 2.8, 4, 5.6, 8, 11, 16. Unlike the preset ring, the aperture ring rotates smoothly, and you can set any intermediate value with it. The smooth movement of the aperture ring is useful when shooting video. The aperture consists of 8 blades that form an opening in the form of regular polyhedrons.
How to use with modern cameras?
Lenses with M42 mounting thread are very easy to use on almost any modern digital camera (both SLR and mirrorless), for this it is enough to choose the right adapter.
DESCRIPTION:
Lens mount: M42
Focal length: 58 mm
Relative aperture: 1:2
Aperture ratio: Frome 2 is 16
Focus rank: Frome 0.5m 20m - infinity
How to use with modern cameras?
Lenses with an M42 mounting thread (M42 X 1/45.5), such as the lens from this review, are very easy to use on almost any modern digital camera (both SLR and mirrorless), for this it is enough to choose the right adapter (adapter). The cheapest adapters can be found on aliexpress.com. Adapters (adapters) with a chip provide more convenience during shooting, usually chips are used to confirm focus and / or exposure metering.