Micro-Nikkor

File:Nikon 55mm Micro-Nikkors (cropped).jpg|Various versions of the 55mm and 60mm Micro-Nikkor for F-mount, from left to right: Micro-Nikkor-P·C Auto 55mm , converted to AIMicro-Nikkor 55mm AI-sAF Micro-Nikkor 55mm AF Micro-Nikkor 60mm AF-S Micro-Nikkor 60mm ED == 105mm Micro-Nikkor ==

The 105mm Micro-Nikkor series started in 1970, with the newest lens being the Z MC 105/2.8 VR S for the Z-mount. The 105mm UV lens, which is called both a Micro-Nikkor and a UV-Nikkor in the literature, is a highly specialized lens for ultraviolet photography made using quartz and phosphate glass instead of regular optical glass. This permits light transmission from roughly 200nm to over 900nm (normal optical glass blocks most UV light). It is specifically corrected for a low amount of focus shift between visible light and UV light, therefore permits focusing for UV using visible light. It had a second production run in 2006 at Tochigi Nikon. == 200mm Micro-Nikkor ==

The 200mm Micro-Nikkor was introduced in 1978 as a manual focus lens for the F-mount, featuring internal focusing, so the physical length of the lens does not change as it is focused closer; it has a maximum magnification ratio of 1:2, similar to other manual focus Micro-Nikkor lenses, but the long focal length gives it a longer working distance, with a closest focus distance of . Instead of a macro extension tube, Nikon recommends using a teleconverter (TC-300/301), providing continuous focus from infinity to a reproduction ratio of 1:1. The apparent discontinuation of the 200mm line is likely due to relatively poor sales numbers, as the 200mm AF-D only sold approx. 30'000 units in its 30 year cycle, while the 105mm AF lenses sold well over 300'000 units in a much shorter time span, and the 105mm AF-S lens sold over 750'000 units. == 70-180mm Zoom Micro-Nikkor ==

The 70-180mm AF-D Micro-Nikkor was introduced in 1997 and discontinued in 2005. The lens is fitted with a focus range-limiting switch with two positions: Full and Limit, restricting focus to greater than or less than , depending on the current focusing distance. Zooming is completely internal and does not change the length of the lens. The front of the lens extends approximately but does not rotate at its minimum focusing distance of , giving it a working distance of . This lens should not be confused with the 70-180mm lens announced by Nikon in 2023, which is a general-purpose zoom for Nikon Z and not a macro zoom. == Specialty lenses ==

The perspective control PC-E lenses 85mm and 45mm ED are designated Micro-Nikkor as well, since they reach a magnification of 1:2. A Micro-Nikkor lens was also offered for the Nikonos RS underwater camera system, the Nikon R-UW AF 50mm Micro-Nikkor. It reaches 1:1 magnification. Nikon also produced several special-purpose lenses which are grouped with close-up equipment alongside the Micro-Nikkor family of lenses. These include the 105mm UV lens mentioned above, as well as 120mm and 200mm Medical-Nikkor lenses for medical applications. The Medical-Nikkor lenses have built-in ring flashes and are designed with a fixed focus distance; as the name suggests, these are specialized lenses designed for medical and dental applications. They are meant to be set to a desired reproduction ratio, then focused by moving the camera to the appropriate distance. Both Medical-Nikkor lenses have optional data imprinting, which projects the reproduction ratio onto the recorded image. The older 200mm Medical-Nikkor was introduced in 1962 and is supplied as a kit with six supplemental close-up lenses to change the reproduction ratio in discrete steps, which is accomplished by mounting one or two of the accessory lenses. When two accessory lenses are stacked, the weaker of the two lenses is mounted closer to the parent lens. Compared to the older 200 mm lens, the 120 mm lens has a longer working distance when capturing equivalent reproduction ratios of 1:2 and greater, despite the ostensibly shorter focal length, due to the internal focusing design. However, the older lens has a greater range of available magnifications. == DX Micro-Nikkor ==

Nikon released the AF-S Micro-Nikkor 85mm VR in 2009 for their DX (APS-C) line of DSLRs. The 85mm is an internal-focus lens with VR image stabilization. In 2011, the AF-S Micro-Nikkor 40mm was released, which has an extending focus mechanism. These lenses achieve a 1:1 magnification, which is equivalent to 1.5:1 magnification on 35mm film or a full-frame camera. == See also ==