It has 0.35X parfocal adjustable relay lens so that the camera can zoom out with larger field of view! A multiplier (1X, 0.63X, 0.5X, 0.35X) with different magnifications is embedded to obtain an adaptive field of view. (Adapted sensor size is 1", 2/3", 1/1.8", 1/2", 1/2.5", 1/3" or 1/4 CCD or CMOS sensor chip).Microscope such as DM series. The lens is perfectly matched to the Leica UIS microscope to ensure image quality. Diameter to insert into Leica phototube at one end. C-mount threads on the other end. 0.35X / 0.55X /1X relay lens. PLS NOTE THAT:THIS ITEM WAS NOT MADE BY NIKON. Directed from factory, welcome wholesaler! It is easy and safe! 100% satisfaction is our goal! We will do our best to resolve problems for you. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical/Lab Equipment Attachments & Accessories\Microscope Parts & Accessories\Microscope Camera & Lens Adapters". The seller is "fotohigh" and is located in this country: CN. This item can be shipped worldwide.