I purchased a Nikon 1 camera recently because I wanted to explore the CX series format sensors as a carry to my DSLR photography equipment, of course, to have a small simple carry along go anywhere camera in lieu of a big DSLR when I go out. This article applies equally to all the 1 series cameras...
So what is an FT1 adapter? It is a lens conversion adapter which allows you to mount DSLR Nikon lens to Nikon series 1 camera bodies and with me having a great collection of Nikon FX glass, it made perfect sense to invest in this adapter.