Where is Lensk located?
Yakutsk Yakutsk (Russian: Якутск ; ] ; Yakut: Дьокуускай , "D'okuuskay", ] ) is the capital city of the Sakha Republic, Russia, located about 450 km south of the Arctic Circle. Population:  (2010 Census) ;  (2002 Census) ;  (1989 Census)
Lens Controller A Lens Controller is device that controls motorized photographic lens functions such as zoom, focus, and iris or aperture. Lens controllers can be found internally in modern still camera photographic lenses and as a stand-alone unit in machine vision, remote sensing, optoelectronics systems, and security applications.