PT2505. Fast lens for Kiev-5 camera, released by ARSENAL in 1969-1971. Focal length - 5 cm (5.2 cm), aperture range f1.8 - f16. Focusing range from 0.9 m to infinity. Number of elements/groups - 7/4.  Angular field - 45º. Kiev (Contax) mount (external bayonet only).

PT2505 - Helios-94  #701538.