Krab Custodia subacquea sovietica Camera accessories

Working mechanisms
Clear optics
This item is a rare Soviet underwater housing, the KRAB (or UKP), made from die-cast aluminum alloy to house 35 mm rangefinder cameras, notably the Leningrad, the FED (models 1-3) and the Zorki (models 1-4). Originally produced for the GOMZ Leningrad camera, this housing allowed taking photographs down to a depth of 40 meters.
Main features
Functional design: The bright yellow body was used to make the camera easily visible in murky waters, while the red cap served as a natural indicator for the sun spectrum; if the red appeared dark or black, it indicated that there was not enough light for color film without a flash.
External controls: It features external knobs and levers that allow adjusting the focus distance, the aperture, the film advance, and the shot without opening the box.
Viewfinder: On the top is mounted a folding frame viewfinder to facilitate underwater framing.