What are the signs on Nikon d80 lens?

AF: autofocus lens, which is the full name of autofocus in English. This lens can achieve autofocus with the body with AF function. For the fuselage compatible with AF and MF (Full Manual Focus) bayonets, the AF lens used on MF fuselage usually loses its autofocus ability. Of course, such signs also appear in Minolta, Olympus and Pentax, expressing the same meaning.

Af-s: swm motor autofocus. Nikon lens with this logo shows that it uses SWM motor.

ASP: aspheric lens. Nikon's "ASP" and Canon's "AL" express the same meaning, that is, the lens adopts aspherical lens design, thus reducing the number of lenses and providing better optical performance while reducing weight and volume. Aspheric lenses are generally used to solve the problems of glare and edge deformation in wide-angle and zoom lenses, and can also improve the optical quality in telephoto lenses. Similarly, Minolta, Longteng and Sigma also use "ASP" to indicate that their lenses use aspherical lenses.

Close-range correction system. It has the same function as Canon's floating system.

D: Distance information, English full name distance. Nikon lens with this logo can transmit shooting distance parameters to the fuselage to realize 3D matrix metering and flash control.

DX: DX series lens. This lens is made by Nikon, and it is used in the format of APS in DSLR, so it can't be used on Quan Huafu models. In addition, the logo of "IX" is also a lens used by Nikon for its APS format model.

ED: ultra-low dispersion, English full name Extra-Low Dispersion. Nikon lens with this logo adopts compound achromatic design and special low-dispersion glass lens to reduce chromatic aberration, thus improving the image quality, contrast and definition of telephoto lens. Pentax lenses also use the word "ED" as a symbol of using ultra-low dispersion technology.

IF: internal focusing function. Traditional lenses focus by moving the entire lens system or moving the front lens group. In telephoto and periscope macro lenses, the lens marked with the word "IF" is focused by moving the lens group inside the lens, which greatly improves the macro ability. The advantage of using internal focusing function is that the actual size of the lens remains unchanged at any focus. The same function as "IF" is the function of "RF" (rear focus). Others who use "IF" or "RF" to indicate the internal focusing function are Sigma, Longteng and Tuli.

M/A: Manual/autofocus in English. Nikon lens with this logo has the function of manual/autofocus switching.

NIC: Nikon integrated coating. It is said that the lens of this lens uses Nikon's unique coating technology.

SIC: Nikon super integrated coating, English full name Super Nikon Integrated Coating. This is an improved NIC coating technology.

SWM: ultrasonic motor, the English full name is Silent Wave Motor. It is Nikon's unique ultrasonic motor zoom technology, which can realize silent and fast response autofocus.

VR: Vibration Reduction function. This is Nikon's unique lens image stabilizer technology. Like Canon's IS, Nikon lens with "VR" logo can offset the image blur caused by hand shake in a certain range.

Example description:

AF 80-400 mm f/4.5-5.6 mm ED VR

Nikon camera autofocus lens; The focal length range is 80-400 mm; The maximum aperture coefficient is 4.5-5.6; It has the function of distance information prediction; Adopt ultra-low dispersion lens; With damping function.