The meaning of Nikon lens logo

Nikon lens logo meaning:

AI: The Automatic Indexing Automatic Maximum Aperture Transmission Technology was released in 1977 and is the first major change in the Nikon F mount. 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 an AI lens is mounted on an AI-compatible body, the maximum aperture value of the lens is transmitted to the camera's metering system with automatic linkage and driving of the mechanical linkage lever to achieve full-aperture metering. . Nikon F2A, F2AS, Nikkormat EL2, FT3 and FM are the first fuselage to benefit from this technology.

Representative lens: Nikkor AI 50/1.4

AI-S: Automatic Indexing Shutter Auto-Shutter Index Transfer Technology In 1981, Nikon modified the full-line AI lens mount to enable it to be fully compatible with the soon-to-be-used FA high-speed program exposure methods. These modified new lenses This is the AI-S mount Nikkor lens. Based on the orange minimum aperture number on the lens aperture ring and aperture direct reading ring and the grinding groove on the bayonet mount, it is very easy to identify. When the AI-S lens is used in the Nikon FA body, it can provide information to the body according to its own focal length to select the normal program or high-speed program. In the shutter speed priority auto exposure mode, they can be in a very wide light range Provide consistent exposure control. (Because the AI-S lens is customized for the "automation" of the exposure on the FA, the body's automatic exposure linkage lever can very smoothly control the aperture of the AI-S lens for faster and accurate exposure. control). Representative shot: Nikkor AIS 50/1.4

AF-S: Silent Wave Motor silent motor on behalf of the lens is equipped with silent motor (Silence Wave Motor, S), this motor is equivalent to Canon's ultrasonic motor (ultrasonic motor), can be "travelling waves" (travelling waves) (travelling waves) Provides energy for optical focusing, fast focus with high precision and quietness, and full manual focus. Cameras that support AF-S lens autofocus have F5; F4; F100; F90X; F90; F80; F70; F65; D1; D1X; D1H; D100, the rest of the body can be used, but also metering, but not auto focus.

Representative lens: 28-70mm f/2.8 ED-IF AF-S Zoom-Nikkor

D-type lens: Distance The focus distance data transfer technology represents the lens can return focus distance information, as a 3D (lightness of the scene, the contrast of the scene, the distance of the scene) matrix reference metering and TTL balanced flash control. Introduced in 1992.

Representative lens: 28-105mm f/3.5-4.5D AF Zoom-Nikkor

CRC: Close Range Correction The close-up correction uses a floating lens design to ensure that the optical quality does not decrease during close-ups. For example, AIS 24/2.8, AF 85/1.4D IF and the like adopt CRC technology.

DC: Defocus-image Control Defocus image control Nikon's original lens provides unique defocus image control. The front end of the lens has a defocusing positioning swivel. The aperture value on the ring is a total of 4 stops from F2 to F5.6, which are respectively marked on the left and right sides of the ring, with R (backward defocus) and F (foreground defocus). Instructions. This is a special type of fixed-focus lens. Its greatest feature is its ability to allow fuzzy control of the background or foreground of a particular subject in order to obtain the best out-of-focus imaging, which is very valuable when shooting portraits. Can help us to control the various parts of the photo according to the desired performance, which is the same lens of other manufacturers can not match.

Nikon currently has only 2 DC lenses: AF DC 105mm f/2D, AF DC 135mm f/2D

ED: Extra-low Dispersion Ultra-low dispersion lens refers to the ED lens included in this lens to minimize the chromatic aberration of the lens and ensure excellent optical performance of the lens.

Representative lens: 80-200mm f/2.8D ED AF Zoom-Nikkor

The difference between the G-type lens and the D-type lens is that the lens has no aperture ring design, aperture adjustment must be completed by the body, and supports 3D matrix metering. This design reduces the lens weight and reduces production costs. This type of lens is fully compatible with the F5, F100, F80, F65, F60, F55, F50, F401, PRONEA, and D1 models. For F4, F90F90X, F70, F801, and F-601, etc., only the program exposure and Shutter priority exposure mode. Incompatible with the rest of the body. The Type G Nikkor lens is easier to operate and theoretically does not operate erroneously because it does not require manual setting of the minimum aperture. This is a continuation of the plastic AF lens for photographers who almost never manually set the lens. Nikon now has a tendency to promote the G-type head.

Representative lens: 28-80mm f/3.3-5.6G AF Zoom-Nikkor

IF: Internal Focusing Internal Focusing The so-called internal focus means that when the lens is in focus, the front and rear lens groups do not move, and the focusing is done by the floating of a focus lens group inside the lens. The focus lens length is not maintained. change. The use of IF technology makes fast and quiet focusing possible.

Representative lens: 85mm f/1.4D IF AF Nikkor

IX Lens 1996 Nikon released a cheap, compact lens for the APS camera Pronea. The same properties as the plastic AF-D lens. Cannot be adapted to non-APS body. Reducing the space reserved for mirrors means that these lenses are used differently for 35mm cameras and the image field is too small to cover 35mm film. However, standard AF lenses can be used for APS cameras.

Micro

Refers to this lens is a macro lens, or a representative macro lens function: 105mm f/2.8D AF Micro-Nikkor

N:New Signs of new Nikon modified lenses, such as the famous AF 80-200/2.8D ED(N)

N/A: Full-time manual focus is the same as Canon's FTM.

P-type lens: built-in CPU Lens fuselage built-in focus motor is a "stability to change" strategy, but this strategy for the huge telephoto lens can not be very spiritual, which makes the Nikon new body can not use the telescope head efficiently . In 1998, Nikon released a built-in CPU manual focusing telephoto lens (P) to meet the advanced auto exposure function of the AF body, which partially solved this problem. Although the P-type lens looks the same as the AI-S lens, these lenses have the electronic and most of the performance of an AF lens.

There are currently only 3 P-type lenses: 500/4 IF-ED, 1200-1700/5.6-8 IF-ED and 45/2.8.

PC-Shift: The shift lens shifts the lens axis to adjust the perspective of the lens. Used for architectural photography.

RF: Rear Focusing The difference between the rear focus technology and the IF is that the RF lens is focused by the rear lens groups. Since the rear lens is smaller than the previous lens, it is easy to drive, so the fast focusing speed is guaranteed, and the lens length is the same. RF also contributes to the improvement of imaging quality.

Representative lens: 85mm f/1.8D AF Nikkor

S:Slim Slim Thin and light Nikon logo, such as AIS 50/1.8S.

SIC: Super Intergrated Coating Super composite coating TC: Teleconvertor Teleconverter VR: Vibration Reduction Electronic damping system NIKON anti-shake lens code, can be used for handheld photography at a slow shutter speed, increase the stability of the picture. The bodies that can support VR include F5, F100, F80, F65, D1, and D100. The rest of the camera can use the lens but does not support the VR function.

Representative lens: 80-400mm f/4.5-5.6D ED VR AF Zoom-Nikkor