Where is Lensk located?
Lensk Lensk (Russian: Ленск ; ] ; Yakut: Лиэнскэй , "Lienskey") is a town and the administrative center of Lensky District of the Sakha Republic, Russia, located on the left bank of the Lena River, approximately 840 km west of Yakutsk, the capital of the republic. As of the 2010 Census, its population was 24,966.
Pentax K-mount The Pentax K-mount, sometimes referred to as the "PK-mount", is a bayonet lens mount standard for mounting interchangeable photographic lenses to 35 mm single-lens reflex (SLR) cameras. It was created by Pentax in 1975, and has since been used by all Pentax 35 mm and digital SLRs (with the exception of the medium format 645D and 645z), as well as the MILC Pentax K-01. A number of other manufacturers have also produced many K-mount lenses and K-mount cameras.