What does the symbol on the lens mean (2)

Because each company's technology is * * *, just changing its name, I won't map the rest of the manufacturers one by one.

But let's list it for everyone to search ~

Lens category

FX: Full shot. The lens developed on the basis of 135mm (full-width) camera can also be installed on half-width camera.

DX: APS-C lens. The lens specially designed for APS-C half frame cannot be used on Quan Huafu models. Coefficient 1.5

Auto focus lens. Nikon lens with this logo has a focus motor, which can be used in any body.

AF: autofocus lens autofocus Generally speaking, the lens belongs to the old model and needs to be matched with a focus motor to achieve autofocus. In addition, for the fuselage compatible with AF and MF (Full Manual Focus) bayonets, the AF lens used on MF fuselage usually loses its autofocus ability. This logo also appeared on the lenses of Minolta, Olympus and Pentax, expressing the same meaning.

E:E lens. Nikon's cheap head In the early manual era, E lens used a lot of plastic. But the optical structure is no different from ordinary lens. Similarly, we will see that K-type, ai-type and ais-type lenses are the code names of Nikon's early lens versions. The old lens of the second-hand market? It's good.

The 3D :D lens structure is a classic interface of Nikon, which can transmit the information of focusing distance and realize the 3D focusing and snapping ability with the fuselage. Corresponding to AF, the lens itself has no focusing ability and needs to be driven by the body. For the convenience of memory, it is understood as? Nikon's heyday? It's good.

The improved G:G lens D mostly adopts ultrasonic motor, which can be used for AF-S machines with or without body motor. The lens structure has also been redesigned and optimized for digital machines, and the purple edge is obviously less than that of D lens. Simple understanding is? The latest version of the digital age, a lens with a motor? .

PC-E: axis-shifting lens. Bai Wan lens ~ Photographers can flexibly control the perspective, deformation and focus of images.

DC: defocused image control technology. Nikon claims that its unique technology can control the Jiao Wai softness of the foreground and background through the defocus ring on the lens. Since ancient times, only a few lenses have been equipped with this technology (Canon 1, Nikon 2, Sony, Britain and the United States have similar STF technology), and AF DC 135mm f/2D has been rumored to be dreamy, known as the seductive emperor, like the terminator or something. ...

Special technology

SWM: silent wave motor. Converting ultrasonic vibration into rotary power to drive the focusing system can realize silent and fast response autofocus, which is basically the same thing as Canon USM.

VR: damping function. This is Nikon's unique lens image stabilizer technology. What are it? VR？ Nikon lens can offset the image blur caused by hand shake in a certain range.

IF/RF: internal focus function/back focus function. When the focus ring is rotated, the lens will not be lengthened or shortened according to the different focal lengths, and the sealing performance of the lens is better. Traditional lenses focus by moving the entire lens system or moving the front lens group.

Therefore, the front group of the lens will protrude, and it is easy to bring dust when zooming. This technology focuses by moving the middle group lens or the rear group lens, so that the lens shell remains sealed to adapt to the worse weather environment.

M/A: manual/autofocus. After autofocus, you can manually turn the focus ring for more accurate focus or virtual focus art creation.

A-m: a-m mode ring. When autofocusing, the focus ring will rotate accordingly.

CRC: Short-range correction of short-range correction system. When shooting at close range, the lens group will move independently, effectively compensating the phase difference and obtaining better image quality.

Special lens

AS: aspheric lens. Having one or two aspheric surfaces can eliminate some kinds of lens aberrations. In traditional spherical mirror, the parallel rays can't be concentrated at one point in a complete shape, which leads to the relative blur (spherical aberration) of the image under large aperture and the distortion of the wide-angle lens image (for example, the building at the edge of the picture is curved). How to realize the miniaturization of the lens by reducing the number of lenses? Aspheric lens is one of the indispensable technologies to solve these three problems.

-Hybrid aspheric lens: a lens with a special plastic film pressed on the optical glass. Molded glass aspheric lens: made of optical glass directly pressed into aspheric mold.

ED/ super ed: Super) ultra-low dispersion. Fluorite, which is close to expensive in nature, can be used as a substitute for fluorite, which can improve contrast and clarity. Composite dispersion design and special low dispersion glass lens are adopted to reduce chromatic aberration, thus improving the imaging quality of telephoto lens.

ASED: aspheric ED lens. Good ... is the baby produced by the combination of AS lens and ed lens, in order to shorten the lens volume.

NIC/SIC: Nikon integrated coating/super integrated coating. Nikon's proud technology can effectively reduce ghosts and glare (that is, rainbow-like halo produced by shooting at the sun, and I sometimes go up by myself ... hehehe), and improve contrast and color levels.

N: nanocrystalline layer. Ultrafine nanocrystalline particles are used to eliminate ghost caused by red light.

RD: circular aperture. When shooting night lights and fireworks with a large aperture, you can get a round, creamy and soft Jiao Wai spot. The spot of traditional aperture is hexagonal, which is clearly visible and has a slight influence on the main body of the picture, also known as bilinear phenomenon. Actually, I think a little angular light looks good. )

For example:

AF 80-400mm f/4.5-5.6D enhanced VR

1. An autofocus lens that needs to be used with the body with motor.

2.80-400mm zoom, which belongs to super telephoto zoom lens.

3. The maximum pore diameter is 4.5 at the 80th end and 5.6 at the 400th end.

It's Nikon's classic D lens, which means there must be G lenses with the same parameters.

5. Equipped with ultra-low dispersion ed lens, the picture will be very clear.

6. With VR anti-shake device

Lens category

DA: The digital lens dedicated to APS-C format, marked with green circle, cannot be used on Quan Huafu models. Coefficient 1.52

FA: Pentax's full-frame camera lens can be inserted into a digital camera, but the picture quality cannot be guaranteed.

Quan Huafu film head for digital camera, which can be used for both digital and film, has only two ... 50mm and 100mm macro, which is the future direction of Pentax.

*: * Mirror is Pentax's advanced professional lens, just like Canon's L-head, commonly known as star mirror.

Limited edition: The limited edition lens produced in limited quantities every day is a higher-grade Pentax lens made of high-grade aluminum alloy.

Special technology

WR: basic three defenses. The lens surface is sealed and coated with film, which has excellent waterproof and pollution-proof performance. It is the main selling point of Pentax.

AW: all-weather three defenses. This is an upgraded version of WR.

If: internal focus internal focus. The lens will not stretch and shrink, and it has excellent dust resistance.

SDM: ultrasonic motor. Concentrate quietly and quickly. = Canon USM = Nikon SWM motor ...

DC: A new mirror motor DC motor. SDM upgrade

XS: ultra-thin and ultra-small. The Pentax lens with this logo is also called? Potato chips? .

ED: ultra-low dispersion lens ultra-low dispersion. Improve contrast and clarity.

Al: Aspheric lens. Improve the focusing clarity and wide-angle deformation of large aperture.

SMC: super multi-layer coating. It means using Pentax's unique coating technology to prevent glare.

HD: The upgraded SMC coating has higher light transmittance, which can not only resist glare, but also make the picture clearer.

For example:

Smc pentax-da18-135mm f/3.5-5.6 ed al [if] dcwr.

1. Pentax digital half-field lens 3. 18- 135mm zoom, actual focal length

2.7.5-205mm 7.5 zoom lens ...

3. The maximum aperture is 4.5 at 18 end and 5.6 at 105 end.

4. Using ultra-low dispersion lens and aspheric lens, the picture will be very clear.

5. Internal focusing structure+waterproof coating. You can have a happy water war with your female basin friends. ^*

6. A new DC car.

Lens category

DC: Sigma APS-C digital lens can't be used on Quan Huafu models. The coefficient is about 1.6.

DG: Sigma Quan Huafu lens, which can be inserted into Quan Huafu digital camera, film camera and APS-C body.

For example, the constant aperture lens is excellent. EX is the high-end series of Sigma in the past, and the mirror has a big EX!

Art: A lens that pursues art, a new generation of high-end series of Sigma, is now a hot lens on the market, and the Sigma art series with redesigned optical structure has even surpassed Canon Nikon in quality. Moreover, it also solves the headache problem of the EX version, and the price is relatively close to the people. The only drawback may be ... it's big and heavy, and there is no such thing as a red circle and a gold circle.

APO:APO lens apochromatic. More than two low dispersion lenses are used to reduce aberration, thus improving the image quality, contrast and clarity of telephoto lenses.

Special technology

OS: optical image stabilization optical stabilizer. It shows that the lens can offset the image blur caused by hand shake in a certain range.

HSM: Hypersonic engine driven by ultrasonic wave. Concentrate quietly and quickly. How can a thing have so many names (anger ...)

RF/IF: back focus/internal focus back focus/internal focus. When focusing, the rear (middle) lens group moves, and the lens will not expand and contract, so it has excellent dust resistance.

CONV: a lens compatible with remote control converter. This symbol indicates a lens that can be equipped with an APO rangefinder.

SLD/ELD/FLD: ultra-low dispersion lens speci/exotic/? f？ Low dispersion. Improve contrast and clarity. Sigma's ultra-low dispersion lenses are divided into three grades, among which FLD is called fluorite grade, and its optical quality is very close to fluorite.

ASP: aspheric lens. Improve the focus definition and wide-angle deformation of large aperture and reduce the lens volume.

For example:

24 mm F 1.4 decigram HSM | Art.

1.24 mm fixed focus

2. 1.4 Top-level constant large aperture

3. Panorama

4.HSM automobile company

5. It belongs to the latest art series, does not paint off, and has good optical quality.

AT-X: Advanced technology. This is a large-caliber professional lens produced by Tuli, which features a red or gold ring at the front end of the lens. High imaging quality is naturally unnecessary.

Pro: Professional lens, English major. Tully's most upscale product has a gold ring in front of the camera.

Other logos are basically the same as Nikon (including appearance ...):

AS: aspheric lens.

SD: ultra-low dispersion

If: internal focus

FX: full angle

DX: APS-C

For example:

AT-X 16-28 F2.8 Professional Foreign Exchange

1. Tuli Top Lens PRO

2. Panorama

3. 16-28 wide-angle zoom

4. Big ternary F2.8 constant aperture

Lens category

Di: Quan Huafu lens, suitable for full frame, half frame and film machine.

Di II: APS-C special lens coefficient 1.55.

Di III: Mirrorless camera, micro single lens. Longteng is really the simplest and clearest classification! None!

Special technology

SP: super performance lens. Really? SP？ The logo of the lens shows that this is a high-performance Longteng large-aperture lens.

Meter (abbreviation for meter)) minimum object distance. Its specific value indicates the closest focal length of the lens. Less than this distance, you can't focus.

VC: optical anti-shake vibration compensation. It shows that the lens can offset the image blur caused by hand shake in a certain range.

Dollar: ultrasonic silent drive. Quiet ultrasonic motor provides fast and accurate autofocus.

PZD: cylindrical ultrasonic motor. Lighter and quieter than USD. There will be no noise when it is used for video shooting.

XR: high refractive index lens. On the premise of ensuring luminous flux and imaging quality, the volume and weight of the lens are greatly reduced, which is mostly used in the field of Longteng large zoom ratio lenses.

ASL: aspheric lens.

LD: ultra-low dispersion lens.

If: internal focus.

For example:

Standard & Poor's15-30mm francs /2.8 DM/USD

1. It is Longteng's SP series high-end lens.

2. 15-30mm zoom wide angle

3. The aperture is large enough and the constant is F2.8

4. Quan Huafu

5. With anti-shake and ultrasonic focusing motor.

Luminous: a lens with constant aperture F 1.2. This is the lens with the largest aperture made by Leica.

Summilux: The lens produced by Leica today will be named Summilux as long as the aperture value is 1.4.

Summicron: Nowadays, any lens produced by Leica with an aperture of 2 will be named Summicron.

Elmarit: In today's Leica lenses, as long as the aperture value is 2.8, it will be named Elmarit (except: Elmar-M 1:2.8/50mm).

Elmar: Now any lens produced by Leica will be named Elmar as long as the aperture value is around 4.

Telyt: a super telescope made by Leica

APO: completely correct chromatic aberration Apochomaticcorrection. APO here is not a material or high-tech technology, but an attitude, which means that no matter how many special lenses or precise corrections are adopted, the three colors of light are all on the same plane, and the color difference will be completely eliminated before the symbol of APO will be crowned. I have to admire this spirit of the Germans here.