Nikon manual lens aperture ring

The meaning of Nikon lens logo

AI: automatic indexing and automatic maximum aperture transfer technology

Published in 1977, it is the first major change of Nikon F bayonet. AI refers to the process and method of transmitting the maximum aperture value of the lens to the photometric system for normal exposure measurement. When AI lens is installed on the fuselage compatible with AI technology, the maximum aperture value of the lens is transmitted to the photometry system of the fuselage under the automatic meshing and driving of the mechanical linkage rod, so as to realize full aperture photometry. Nikon F2A, F2AS, Nikkormat EL2, FT3 and FM are the first airframes to benefit from this technology. Representative lens: Nicole AI 50/ 1.4

AI-S: Automatic Indexing Shutter Automatic Shutter Index Transfer Technology

In 198 1, Nikon modified the bayonet of all AI lenses to make them fully compatible with the FA high-speed program exposure mode that will be put into use soon. These modified new lenses are AI-S bayonet nikkor lens. According to the minimum orange aperture number on the lens aperture ring and aperture direct reading ring, and the grinding groove on the blade bayonet, it is very easy to identify. When AI-S lens is used in Nikon FA fuselage, it can provide information to the fuselage according to its focal length to select normal program or high-speed program. When the shutter speed takes precedence over the automatic exposure mode, they can provide consistent exposure control in a very wide illumination range. (Because the AI-S lens is customized for the "automation" of exposure on FA, the automatic exposure linkage of the fuselage can control the aperture of the AI-S lens very smoothly, and realize faster and more accurate exposure control). Representative lens: Nicole AIS 50/ 1.4

AF-S: silent wave motor.

The lens is equipped with a silent wave motor (S), which is equivalent to Canon's ultrasonic motor. Can use the energy provided by the "traveling wave" for optical focusing, with fast focusing speed, high precision and quiet, and can always focus manually. The camera that can support AF-S lens autofocus is F5; F4； f 100； F90XF90F80F70F65d 1； d 1X； d 1H； D 100, the rest of the fuselage can be connected for measurement, but it can't focus automatically. Representative lens: 28-70 mm f/2.8 ED-IF AF-S Zoom-Nikkor

D-lens: Long-distance focusing and long-distance data transmission technology

The information indicating that the lens can return to the focal length can be used as a reference for 3D (scene brightness, scene contrast, scene distance) matrix photometry and the control of TTL balanced flash. Introduced in 1992. Representative lens: 28-105 mm f/3.5-4.5d af zoom-nikkor.

CRC: Close-up correction

Adopt floating lens design to ensure that the optical quality will not decrease during close-up. For example, if AIS 24/2.8 and AF 85/ 1.4D all adopt CRC technology.

DC: defocused image control defocused image control

Nikon original lens can provide unique defocus image control function. There is a defocusing positioning rotating ring at the front of the lens, and the aperture values on the ring are from F2 to F5.6, which are marked on the left and right sides of the ring respectively, and are represented by R (background defocus) and F (foreground defocus). This is a special fixed-focus lens, its biggest feature is that it allows fuzzy control of the background or foreground of a specific subject to obtain the best out-of-focus imaging, which is very valuable when shooting portraits, and it can also help us control all parts of the photo according to what we want to express, which is incomparable to similar lenses of other manufacturers. At present, Nikon has only two DC lenses: AF DC 105mm f/2D and AF DC 135mm f/2D.

ED: ultra-low dispersion ultra-low dispersion lens

It means that this lens contains ED lens, which minimizes the chromatic aberration of the lens, thus ensuring the excellent optical performance of the lens. Representative lens: 80-200mm f/2.8D ED AF Zoom-Nicole

G lens

Unlike D-lens, this lens has no aperture ring design, aperture adjustment must be completed by the body, and it also supports 3D matrix metering. This design reduces the weight and production cost of the lens. This lens is fully compatible with F5, F 100, F80, F65, F60, F55, F50, F40 1, PRONEA, D 1. For F4, F90, F70, F80 1 and F. are not compatible with the rest of the fuselage. G-type nikkor lens is easier to operate, and there will be no misoperation in theory, because there is no need to manually set the minimum aperture. This is a continuation of the plastic autofocus lens, which is suitable for photographers who almost never set the lens manually. Now Nikon has the trend of popularizing G-heads. Representative lens: 28-80mm f/3.3-5.6G AF Zoom-Nicole

IF: internal focusing internal focusing technology

The so-called internal focus means that when the lens is in focus, the front and rear lenses do not move, but the focus is completed by floating a focusing lens group inside the lens, and the lens length remains unchanged when focusing. The adoption of intermediate frequency technology makes it possible to focus quickly and quietly. Representative lens: 85mm f/ 1.4D IF AF Nicole.

IX lens

1996 Nikon released a cheap and compact lens for the APS camera Pronea. The characteristics are the same as plastic AF-D lens. Unable to adapt to non-APS fuselage. The space reserved for the reflector is reduced, which means that this lens is not used for 35mm cameras, and the image field is too small to cover 35mm film. But the standard AF lens can be used for APS cameras.

Macro: Macro lens

Explain that this lens is a macro lens or has the function of macro shooting. Representative lens: 105mm f/2.8d AF mini Nicole

New new type

Nikon has improved the logo of some lenses, such as the famous AF 80-200/2.8ED (N).

Not applicable: full-time manual focusing

Just like Canon's FTM.

P lens: built-in CPU lens

The built-in focus motor in the fuselage is a strategy of "changing with the constant", but this strategy is not very effective for the huge telescopic automatic lens, resulting in Nikon's new fuselage can not make efficient use of the telescope head. 1998 Nikon released the manual focusing telephoto lens (P) with built-in CPU to meet the advanced automatic exposure function of AF fuselage, thus partially solving this problem. Although P-type lenses look the same as AI-S lenses, these lenses have the electronics and most of the performance of AF lenses. At present, there are only three types of P-type lenses: 500/4 IF-ED,1200-1700/5.6-8 IF-ED and 45/2.8.

PC-Shift: moving lens

A lens that moves the optical axis to adjust the viewing angle. Mostly used in architectural photography.

RF: back focusing and back group focusing technology

Unlike if, the RF lens is focused by the rear lens group. Because the rear lens group is smaller than the front lens group, it is easy to drive, ensuring faster focusing speed and the same lens length. Radio frequency also helps to improve the imaging quality. Representative lens: 85mm f/ 1.8D AF Nikkor

S: slim is light and thin.

Nikon signed some thin lenses, such as AIS 50/1.8s.

SIC: super integrated coating super composite coating

TC: remote converter rangefinder

VR: electronic damping system for vibration reduction

The code name of Nikon anti-shake lens can be used for hand-held photography to increase the stability of the picture at low shutter speed. The bodies that can support VR are F5, F 100, F80, F65, D 1, D 100. The rest of the fuselage can use the lens but does not support VR function. Representative lens: 80-400 mm f/4.5-5.6 ed VR AF zoom-Nicole