Nikon Lens Scope converter: It’s a telescope. It’s a precision magnification tool. It’s excellent for field observation work like bird-watching or amateur surveying. It’s Nikon’s this first Lens Scope Converter and, like all Nikon fine optical products, it’s a high quality accurate instrument that will give you years of excellent service. Used with Nikkor lenses for SLR and DSLR cameras, it will transform your lens into a telescope with magnification that’s 1/10 the focal length of the lens in use. The image you see at the centre of the focusing screen with the lens is attached to a camera is big – approximately 10mm in diameter; details show up sharp and clear. The colours are natural and true to life, because Nikon made sure all chromatic aberrations are corrected. For convenient focusing, the Nikon lens Scope Converter provides a convenient dioptre adjustment ring, with is adjustments from -5 to + 3 dioptres.