Teach you to understand symbols on the lens

Teach you to understand symbols on the lens

Long, long ago, Hao Ge lens often see their names are a beach head paste! nz print saw two lenses, because the last one more IS, the price twice as expensive! F2.8 and F4 represents the difference between the price doubled! Simply confused, so today I decided to do a noble thing – these people looked headache abbreviations are finishing in this article, I hope this article can be sorted into your favorites folder.

As we all know, there are many lens manufacturers, canvas printing nz each also has a number of various naming conventions, but the name of the standard lens can basically be divided into four parts:

Lens categories – focal length parameter – Aperture parameter – Special technology
Often these collateral printed or etched on the front of the lens of the pressure ring

But also in the mirror who printed the words corresponding practice

Let us talk about each are the same:

Focal length parameter

– Photos made with the camera and the breadth of far greater value to shoot farther, the smaller the value the more shot wide.


The focal length can be adjusted within a certain range of the zoom lens, acrylic photo mounting standing people stay put, by twisting the zoom ring can change the composition, a lens can be frequently taken into account more themes, most beginners and travelers Love.


A lens focal length is fixed, non-adjustable lens and want to change the composition entirely by walking and had to spend some not know yet before pressing the shutter, also we tend to get some unique viewing angle. Because one is only responsible for a fixed focus lens focal lengths, we is able achieve the ultimate image quality and sharpness. We often see such words, 'Wong at certain zoom lens aperture F8 to shrink even when comparable fixed focus lens' can obviously see the gap in some evaluation. But the disadvantages are also obvious, one would like to raise good use of it requires long-lens photography and running, the second is the time to travel if you carry more than just focusing, and frequent replacement lenses, heavy, and cumbersome.

In conclusion it is: Ease of use: Zoom> fixed focus

Image quality: Zoom <fixed-focus Weight: a fixed-focus <zoom <more than just focusing

Aperture parameter

1: XX, f / X.X, F X.X:

Three Kind of Writing expressed aperture parameters, but also affect the cost of the lens is an extremely important criteria. F4 and F2.8 maximum aperture of the lens is usually graded watershed. So what use has that girl?

1. The greater the amount of light, so bright and clean photographs;

2. Both, manufacture beautiful dream, focusing on outstanding results.

Some also see the zoom lens aperture value is a variable, such as f / 3.5-5.6, represents the maximum lens aperture wide angle end can be called to order at 3.5 in long Jiao Duanguang lens ring can be opened to maximum 5.6 .. Accustomed to using shutter priority and manual transmission friends will definitely annoyed, because if the wide angle end to open the aperture to 3.5 and then screw and zoom ring, click on the picture …… black once, then again need to adjust the parameters have been outside the aperture originally achieve the desired exposure.

In conclusion is this:

The larger the aperture, the better (more expensive), constant aperture of the iris than they change their own good (and expensive)

Ⅰ, Ⅱ, Ⅲ, Ⅳ, Ⅴ

The Roman numerals often appear on the lens, which indicates that this is the lens of the first generations of products, the basic structure of the optical constant. General performance will have been greatly improved and optimized.

Macro: Macro Macro. There are accurate magnification lens for capturing insects, flower Ben, and food photography. Many high resolution lenses with a certain macro function, Hao Ge to understand is that you can shoot a fly leg hair is very clear lens …

Then talk about the various different

Lens Category:

EF: full-frame lens Electronic Focusing. The most common category of Canon lenses can be used in the EOS series film SLR cameras, the full-frame digital SLR camera, APD-H (coefficient 1.3) and APS-C format (deny camera coefficient 1.6) digital SLR cameras. Daisy has a red dot at the convenient alignment of the body mount ~

EF-S: APS-C format camera Electronic Focusing Small image circle. Designed for APS-C SLR camera designed lens, commonly known as deny or residual web, full frame sensor area is 40% cheaper prices. It is likewise more common in our Canon lenses. Chrysanthemum Department has a white square for easy alignment of the body mount ~

TS-E: shift lens Tile / Shift. Hao Ge understanding is feasible to bend the lens, and then offset the change in focus and perspective range for architectural photography and so on.

MP-E: macro lens Macro Photo. Specifically to the fly leg hair shot clearly born lens. I think my life would not buy it …

Special technology:

Include : Image Stabilizer Image Stabilizer. With internal 'manual optical compensation element' of the lens, shooting in moments detect hand shake and the direction and intensity in the opposite direction in order to urging and jitter technology. It did not have its lens is small price to double … the benefits are greatly have to Hao Ge Parkinson general shooting hand 1/30 second shutter speed hung up, there IS lenses can start to 1 / 8 seconds, in order to increase the success rate of shooting at night and reduce sensitivity.

Also on a tripod temporarily disable this feature to avoid unnecessary reverse jitter. = Switch side of the lens. =

USM: ultrasonic motor Ultra-Sonic Motor. On behalf of the lens can be quick and quiet AF. Ultrasonic vibration is transformed into rotational power to drive the focusing system, but the machine AF when recording video still small voice will be recorded into it.

STM: stepping motor Stepping Motor can achieve quieter, smoother autofocus for video recording. Electromagnetic pulse as being the engine, is the focus motor Canon to record video and new design, dramatically reducing the focus when recording the resulting noise.

Float: the float function, the English name Floating System. Macro shooting with the development of technology. Fired at close range, move the mirror group will be independent and effective compensation for the difference in order to obtain better image quality.

L: Luxury Luxury. Such front of the lens with red trim ring, that is, the girl must have 'red circle head.' Specifically approved by the Canon lens has excellent internal high optical performance, special lenses (see below) with enough material, full of sincerity only emptying your wallet

Special lenses:

Fluorite / FL: calcium fluoride crystals Fluorite. At elevated temperatures can shine magic stones. Because it has a summer fireflies as beautiful color, hence the name 'fluorite.' It also has a general optical glass cannot be achieved vivid, detailed description of the performance. Because the light generated by the focus lens deviates from the overall color will appear divergent, so the captured image sharpness drop, which we call color. Fluorite lens because the light dispersion few, almost no color, Canon developed in the late 1960s, artificial crystalline purification technology fluorite, fluorite from the most suitable material for photographic lenses,

UD: ED lens Ultra Low Dispersion ?. Because the cost is too steep to use purified fluorite, people developed a UD glass. The role of two UD lens and a fluorite lens considerable role.

S-UD: Super ED lens Super-Ultra Low Dispersion ?. Because the technology improved, people have developed a super UD glass. Optical properties of fluorite closer, a role of S-UD lens and a fluorite lens considerable role.

AL: aspherical lens Aspherical Lens. As the name suggests used in the design of a curved lens is not spherical, the traditional spherical lens there can not be a complete parallel light gathered in the shape of a point on the issue, resulting in a relatively large-aperture shooting imaging blur (spherical aberration), wide-angle lens shoot the image distortion (eg floor edge of the screen is bent), and reducing the number of lens so that the lens miniaturization – one aspherical lens technology to solve these three problems indispensable. Further polishing aspherical lens is the product of doing multiple measurements and polished, ordinary aspherical lens is molded directly from the machine.

Teach you to read the sign on the lens that mess

DO: multilayer diffractive optics Diffractive Optical. Simple to understand is to put together a multi-layer synthetic lens super lens, but also has characteristics of fluorite and aspherical lens, significantly reducing costs at the same time, the lens volume reduced by 30%. The technology is still in continuous progress stage, only a few currently on the market several 'green circle' (=. = ||| Really … really ugly) lens with DO lens.

BR: blue spectral compound refractive lens Blue Spectrum Refractive Optics Len. This year's innovative technology, can effectively inhibit the purple fringing, currently only the new EF 35mm f / 1.4L II USM uses the technology. But this seems to have shot does not buy it …

A few examples –

EF-S 18-135mm f / 3.5-5.6 IS STM

1. Deny machine dedicated lenses.

2.18mm to 135mm focal length, multiply the actual focal length of about 1.6 coefficient 29-216mm. More than one use, general quality (good lens design cannot take into account all focal length imaging optimization).

3. Maximum aperture wide angle end to carve F3.5, telephoto end can only be opened to F5.6.

4. With IS image stabilization. The STM is equipped with the new stepper motor

EF 70-200mm f / 2.8L IS II USM

1.Eos GM full-size lens

2.70mm to 200mm focal length, telephoto lens belongs

3. The maximum aperture may be open to constant F2.8, sufficient amount of light

4. Canon's top L red circle lens, fine workmanship, with lavish special lens (an official information fluorite, UD lens 5), quality is very praise.

5. With the IS image stabilization and ultrasonic autofocus motor

6. The lens is a second-generation product

EF 35mm f / 1.4L II USM

1.Eos GM full-size lens

2.35mm fixed-focus, the picture is very clear and very sharp

3. The maximum aperture may be open to constant F1.4

4. Canon's top L red circle lens, using a sufficient amount of special lenses (official data for the UD, BR, lens grinding AL and AL each one)

5. With ultrasonic focusing motor

6. The lens is a second-generation product

OK you understand it?

Because of various technologies are common, changed the name of it, and the rest of the manufacturers I am not one with pictures Kazakhstan

But still listed for everyone to retrieve ~

Lens category

FX: full-frame lens. To 135mm (full frame) based on the development of the camera lens to be installed on demand machine.

DX: APS-C web camera. Designed for APS-C lens half frame design, it cannot be used on full-frame models. Coefficient 1.5

AF-S: SWM motor autofocus lens. Identifies with this Nikon lenses, lens with focus motor, it can be used with anybody to use.

AF: Auto Focus Lens Auto Focus. Lenses are generally older models needed to achieve the body having a focus motor, can achieve autofocus. In addition to the AF and MF (Full Manual Focus) mount compatible body concerned, in MF AF lens with the body, usually lose this ability to autofocus. Such identification also was on Minolta, Olympus and Pentax lenses for brands such as express the same meaning.

E: E-type lens. Nikon early era of cheap manual head, E lens extensive use of plastics. However, the normal lens optical structure and there is no difference. Similarly, we will see K type, ai type, as type of lens, the lens is Nikon earlier version of the code, all simply understood as the 'secondary market old lens' is like.

D: D type lens structure is NIKON classic interface, you can pass information focusing distance, with the body to achieve the ability to capture 3D focus corresponding AF, focus the lens itself does not possess the power, through the entire body-driven. In order to facilitate memory to be considered as 'the heyday of Nikon lenses are' like.

G: Improved G Lens D, most of the use of ultrasonic motors, the corresponding AF-S, compatible with or without the use of a machine motor body, lens structure also redesigned for digital machine is optimized, purple fringing obvious than D decreasing lens. Simple to understand, 'the latest version of the digital era lenses are inserted the motor.'

PC-E: shift lens. Promising to bend the lens – the photographer the flexibility to manipulate image perspective, distortion and focus.

DC: Defocus-image Control technology. Nikon claiming exclusive technology, you can defocus ring on the lens to check the foreground and background of soft-focus level. Since ancient times only a few lens loading this technique (a Canon, Nikon 2, Sony of the Anglo-American has a similar technology STF), AF DC 135mm f / 2D is transferred very public pool, known as the royal seductive, portrait Terminator Han Han Han …

Special technology

SWM: ultrasonic motor Silent Wave Motor. Ultrasonic vibration is converted to rotational power to drive the focusing system, can achieve silent but quick AF response and Canon USM is a basic thing ….

VR: Vibration Reduction function Vibration Reduction. This lens is Nikon's exclusive anti-shake technology, with a 'VR' Nikon lenses can be identified within a precise range offset caused by hand shake and image blur.

IF / RF: internal focusing function / function after concentrating Internal Fousing. When turning the lens focusing ring will not stretch depending on the focal length becomes shorter, the lens seal better. Conventional lenses are moving the entire lens system or by moving the front lens group to achieve focus,

So the first lens group will be emphasized, zooming easily into dust. The technology group by presenting the lens or group of lenses focusing, keeping the lens housing seal to accommodate even worse weather conditions.

M / A: manual focusing mode Manual / Auto focusing. AF focus, you can manually turning the focusing ring for more precise focus or virtual focus of artistic creation.

A-M: A-M mode ring. Automatic focus, the focus ring rotation accordingly

CRC: Close Range Correction System Close-Range Correction. Fired at close range, move the mirror group will be independent and effective compensation for the difference in order to obtain better image quality.

Special lenses

AS: aspherical lens Aspherical. Have one or both of the aspheric surface, can eliminate certain types of lens aberration, the traditional spherical lens there can not be a complete parallel light gathered in the shape of a point on the issue, resulting in a relatively large-aperture imaging shooting Fuzzy (spherical aberration), wide angle lens distortion image distortion (eg floor edge of the screen is bent), and reducing the number of lens so that the lens miniaturization – one aspherical lens is essential to solve the three major technical problems .

– Hybrid aspheric lenses: plastic film embossed with a unique optical glass lenses. Molded glass aspherical lens: by directly pressed into the photosensitive glass aspherical mold made.

ED / Super ED: Extra-low Dispersion (Super) Extra-Low Dispersion. Properties close to the expensive fluorite, fluorite as an alternative, you can improve the contrast and improve clarity, using apochromatic design and the use of special low-dispersion glass lenses to cut color aberration, thereby improving image quality telephoto lens .

ASED: aspherical ED lens. Ah … the lens is AS + wanderers ED lens assembly produced in order to reduce the lens size.

NIC / SIC: Nikon Integrated Coating / Super Integrated Coating (Super) Nikon Integrated Coating. Nikon takes pride in technology, can effectively reduce ghosting and flare (that is, toward the sun to shoot intraspecific generated rainbow-like halo, I sometimes point up on P … Ha ha ha) to increase the effectiveness of contrast and color level.

N: nanocrystalline layer. * Ultra-fine nano-crystalline particles, eliminating ghosting brought about by a red light.

RD: circular aperture. Large aperture shooting night lighting fireworks, you can get fat, creamy spread, soft-focus spot. Traditional spot aperture is hexagonal, but clearly visible spot, slightly affect the main screen, otherwise known as two linear phenomenon. (In fact, I'd feel a little angular nice spot)

For example:

AF 80-400mm f / 4.5-5.6D ED VR
1. The need to match the AF lens with a motor body used
2.80-400mm zoom, are ultra-telephoto zoom lens
3. The maximum aperture at the end of 80 end 4.5,400 5.6
4. Nikon classic D lens, there is a parameter that is certainly exactly the same G Lens
5. Equipped with ultra-low dispersion ED lens, the picture will be very clear.
6. With VR image stabilization means
Teach you to read the sign on the lens that mess

Lens category

DA: APS-C format dedicated digital specific lens with a green circle logo cannot be used in full-frame models. Coefficient 1.52

FA: Pentax full-frame film lens can be inserted in the digital machine, but the quality cannot be guaranteed.

D FA: digital machine optimized for the full-size film cameras, digital, dual-use film, you two … a 50mm a 100mm macro, represents the future direction of Pentax.

*: * Pentax lenses are high-end professional camera, like the Canon L head, as referred to as star mirror.

Limited: Daily limited production limited edition lens, Pentax higher grade lenses, crafted from high-grade aluminum.

Special technology

WR: Basic and three defenses. After sealing the lens surface coating has excellent water resistant properties. Pentax is the main selling point

AW: three anti-weather. WR is just an upgraded version of the strategy.

IF: within the focusing Inter Focus. Lens will not stretch, excellent dust.

SDM: ultrasonic motor. Of Jiao Anjing fast. Canon's USM  Nikon SWM motor…

DC: New lens body motor Direct Current Motor. SDM Upgraded

XS: Slim Extra Small. Pentax lens with the logo, also known as 'potato chips.'

ED: ED lens Extra-Low Dispersion. To improve the contrast, increased clarity.

AL: aspherical lens Aspherical Lens. Improve clarity and focus within the large-aperture wide angle distortion.
SMC: Super multi-layer coating Super Mluti Coating. That the use of the Pentax unique coating technology, anti-glare

HD: SMC coating an upgraded version of higher transmittance, in addition to anti-glare can make the picture more crisp.

For example:

Sec PENTAX- DA 18-135mm f / 3.5-5.6 ED AL [IF] DC WR

1. Deny Pentax digital zoom lens 3.18-135mm actual focal lengths

2.7.5-205mm 7.5 times zoom lens …

3. The maximum aperture at the end of 18 end 4.5,105 5.6

4. Equipped with ultra-low dispersion lens and aspherical lens, the picture will be clear

5. Focus inner structure + waterproof coating. And women can be friends Happy basin water fight the yo ~ * ^. ^ *

6. New DC motor with.

Lens category

DC: Sigma APS-C format digital camera cannot be used in full-frame models. Coefficient of approximately 1.6

DG: The Sigma full-frame lens can be included in full-frame digital machines, film maker and APS-C body.

EX: constant aperture lens Excellence. Sigma EX is a conventional high-end series, the lens body gets a big EX!

ART: Art and the pursuit of raw footage. Sigma's latest generation of high-end series, now available in the market so hot lens, optical structure redesigned Sigma ART series, even more than the quality of Canon Nikon. Nevertheless, also to solve the problem Diaoqi EX version of the headache, the price is relatively close to the people. The only drawback may be the … broad and heavy gold ring red circle has not been what the light show.

APO: APO lens Apochromatic. On behalf of the lens with two or more low-dispersion lenses to reduce aberrations, thereby improving image quality telephoto lens to improve contrast is enhanced clarity.

Special technology

OS: optical image stabilization Optical Stabilizer. It means that the lens can counteract image blur caused by hand-shake in a specified range.

HSM: ultrasonic motor drive Hyper Sonic Motor. Of Jiao Anjing fast. How a thing can have so many names (anger …)

Focus Rear Focus / Inter Focus Focus rear / inside: RF / IF. When the focus rear (intermediate) lens group moves, the lens does not stretch, excellent dust.

CONV: Teleconverter-Compatible Lens. This symbol represents an APO tele converter lens assembly

SLD / ELD / FLD: ultra-low dispersion lens are Specia / Extraordinary / 'F' Low Dispersion. To improve the contrast, increased clarity. Sigma's ultra-low dispersion lens at three levels, which called FLD grade fluorspar, fluorite extremely close to the optical quality

ASP: aspherical lens Aspherical Lens. Improve clarity and focus within the large-aperture wide angle distortion and reduce lens size.

For example:

24mm F1.4 DG HSM | Art

1.24mm fixed focus

2.1.4 Top constant large aperture

3. The full-size lens

4. With HSM motor

5. Art belongs to the latest series, not paint, as well as good optical quality

AT-X: Advanced Camera Advanced Technology-Xtra. This is the Tokina lens specialized production of large diameter, it characterized front of the lens with red or gold ring. High image quality is naturally not have to waste any more words.

PRO: professional lenses, the English name Proffesional. Tolkien's most high-end products, the front of the lens with a gold ring

Nikon and other basic identity is the same (including the appearance …):

AS: aspheric lenses.

SD: Ultra-low Dispersion

IF: inner focusing

FX: full size

DX: APS-C web

For example:

AT-X 16-28 F2.8 PRO FX

1. The most advanced lens Tokina PRO

2. The full-size lens

3.16-28 Wide Zoom

4. Big Three levels of constant aperture F2.8

Lens category

Dir: full frame lens for full frame, deny and film maker.

Dir II: APS-C lenses dedicated web coefficient 1.55

Dip III: no anti-camera, single micro lens. Dragon really the most straightforward classification! None of them!

Special technology

SP: Super performance lens Super Performance. Lens has 'SP' logo, indicating that it is a Dragon high-performance large aperture lens.

M.O.D: Closest focusing distance Minimum Object Distance. Its actual value indicates the closest focusing distance of this lens. Less than this distance will not be able to concentrate.

VC: optical image stabilization Vibration Compensation. It means that the lens can counteract image blur caused by hand-shake in a definite range.

USD: ultrasonic motor drive Ultrasonic Silent Drive. Quiet ultrasonic motor provides fast and accurate autofocus.

PZD: cylindrical ultrasonic motor. Lighter than the USD, but also quieter. For video capture will not have noise.

XR: extraordinary refractive index lenses. In light flux and image quality assurance under the premise of significantly decreased lens size and weight, is used in large zoom ratio lens Tamron field.

ASL: aspheric lenses.

LD: ED lens.

IF: inner focus.

For example:

SP 15-30mm F / 2.8 Di VC USD

1. Thomson SP series of high-end lenses.

2.15-30mm Zoom Wide

3. The aperture is sufficiently large and constant F2.8

4. The full frame

5. With image stabilization and an ultrasonic focus motor.

Occiput: constant aperture F1.2 Leica lens which is produced by the maximum aperture of the lens.

Somalia: In today's Leica lens production, as long as the lens aperture value of 1.4, will be named Summilux.

Summation: In today's Leica lens production, as long as the aperture value of the lens 2, will be named Summicron.

Elmarit: Today Leica lens production, as long as the lens aperture value of 2.8, will be named Elmarit (Exception: Elmar-M 1: 2.8 / 50mm).

Elgar: Today Leica lens production, as long as the aperture value will be around 4 named Elmar.

Terry: Leica production of ultra-telephoto lens

APO: fully corrected color Apochomaticcorrection. Here APO is not a material or a highly sophisticated technology, and is an attitude, showing how much the lens regardless of the use of special lenses or how many times a piece of precision straightening, so the three colors on the same plane, completely eliminating chromatic aberration will crown the APO logo. Here the Germans had to admire this spirit

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