sy镜头属性（SY lens properties）

1、sy镜头属性（SY lens properties）In the identification of the lens, the lens attributes, focal length parameters, aperture parameters, characteristics and so on are included.The lenss identity can be summed up as:Lens property: usually indicates whether the lens is AF or MF, and usually includes the identi

2、fication of some lens categories;Focal length parameter: the focal range of the lens, the unit is mm;Aperture parameter: represents the maximum aperture factor of the lens, and some lenses also indicate the minimum aperture factor of the lens;Features: the technique used to represent the lens;Versio

3、n number: indicate the lens in the same specification lens, belong to the first few generations.For example, the most commonly used expressions are: EF, 28-80mm, 1:3.5-5.6, USM, IVThere are other ways of expressing this, too. See the figure below.Lens propertiesFocal length parameterAperture paramet

4、erCharacteristicsVersion numberIdentifying EF28-80mm1:3.5-5.6USMIVIndicates the meaning of the EF bayonet lens28-80mmThe maximum aperture is f/3.5-5.6The lens is powered by a USM motorFor the fourth generationSince the default unit of the focal length parameter is mm, the sign of the aperture parame

5、ter is prefixed with 1:, which is usually simplified as:EF 28-80/3.5-5.6 USM IVThese logos are usually printed or etched on the press ring at the front of the lens, and also printed on the mirror.Some special lenses will further identify the T- aperture mark under the f- system aperture, for example

6、:Minolta STF 135/2.8T4.5The odd thing is that the lenses that relate to the German optical industry, in the front, are words like Distagon.In order to facilitate identification, the following collection of common lens identification abbreviation.ShorthandExpressEnglish expressionSpecific content and

7、 functionAdopted manufacturerADAnomalous dispersionAnomalousDispersionIts purpose is to eliminate dispersion, mainly used in the medium telephoto lens and partial wide-angle zoom lens.MinoltaTamronAEAutomatic exposureAutoExposureRepresents the type of lens that can achieve aperture priority and manu

8、al settingsAFAF lensAutoFocusThis kind of lens matches AF fuselage, can realize AF;For AF/MF compliant airframe, the AF lens is usually used on the MF body to lose AF capability.MinoltaNikonOlympusPentaxAF-IAF Nikkor/ /Lens with built-in motorNikonAF-SAF-S lensAF-SLenses using SWM motors.NikonAIAI N

9、ikkor/ /Automatic indication (Auto, indexing) lensNikonAISAIS Nikkor/ /AI lens that supports shutter priorityNikonAPOAPO lensApochromaticThese lenses are designed for complex dispersion and special low dispersion glass lenses for reducing chromatic aberration, thereby improving the image quality of

10、telephoto lenses, improving contrast and improving sharpness.LeicaMinoltaSigmaALAspherical lensAsphericalIn lens design, lenses that are not spherical can reduce the number of lenses and provide better optical performance while reducing weight and reducing volume. Aspheric lenses are generally used

11、to solve glare and edge distortion in wide-angle and zoom lenses, and also to improve optical quality in telephoto lenses.CanonPentaxASAspherical lensAsphericalWith ASPTokinaASLAspherical lensAsphericalWith ASPTamronASPAspherical lensAsphericalIn lens design, lenses that are not spherical can reduce

12、 the number of lenses and provide better optical performance while reducing weight and reducing volume.Aspheric lenses are generally used to solve glare and edge distortion in wide-angle and zoom lenses, and also to improve optical quality in telephoto lenses.MinoltaNikonSigmaTamronAT-XAdvanced lens

13、AdvancedTechnology-XtraTokina produces large caliber professional lenses featuring a red or gold ring at the front of the lensTokinaBBARBroadband antireflection multilayer coatingBroad-BandAnti ReflectionCoating technique of Tamron lensTamronCF MicroThe whole macroContinueFocus microAll the focal se

14、gments directly to macro focusingCIRRound diaphragmCircular7 or 9 blades are usually used.At the maximum aperture contraction of 1.5 stalls, still can maintain the perfect circle, so that can form a smooth background blur effect, so that the background is very natural defocus.MinoltaCRCProximity cor

15、rection systemClose RangeCorrectionSame floating system.NikonDDistance informationDistanceThe shooting distance parameter can be passed to the fuselage;Nikon body can realize 3D matrix photometry and flash control.Minolta body can be achieved with distance parameters of flash control.MinoltaNikonDCD

16、efocus controlDefocus-imageControlNikonDFDual FocusDual FocusThe lens does not rotate at the AF; the damping is moderate at MF, so the grip is good.SigmaDGDigital classDigitalGroupZoom lens suitable for digital SLR use.SigmaDiDigital lensDigitallyIntegratedTamron production takes a comprehensive acc

17、ount of digital photography with lensesTamronDLluxuryDeLuxeAlthough the shelf is moderate, the DL lens is a full featured lens. Like any other Sigma lens, it is equipped with a special lens hood, with half stop aperture, manual aperture setting, depth of field indication, distance indicator, infrare

18、d correction indicator, etc.SigmaDODiffraction opticsDiffractiveOpticalThe multilayer diffractive optical lens has the characteristics of fluorite and aspherical lenses simultaneously.CanonDXDX series lens/ /Nikon produces APS frames specifically for DSLR useNikonEBCSuper EBCElectronicBeam CoatinigA

19、 coating technique for Fuji lensesFujifilmEDUltra-low dispersionExtra-LowDispersionWorks like a APO lensNikonPentaxEFElectronic mountElectronicFocusingAF lenses used in conjunction with Canon EOS series camerasCanonEMDElectromagnetic diaphragmElectromagneticDiaphragmElectronically controlled opening

20、 / shrinking apertureCanonEXexcellentEXcellenceThe utility model belongs to a professional lens, characterized in that the lens barrel is EX coated and has EX mark.SigmaFisheyeFisheye lensFisheyeFloatFloatFloatingSystemA lens design method. In close range shooting, the lenses designed to float will

21、compensate for near - distance aberrations in order to achieve better image quality.CanonFPFocus presetFocus PresetCanonFT-MFull time manualFull timeManualYou can manually adjust the lens focus in the AF stateCanonGG series lens/ /High quality lens series. It has the characteristics of high resoluti

22、on and vivid color reduction, natural bokeh effect etc. Circular aperture design, double floating and floating focus design are adopted. AD glass lens, aspheric lens and focus lock button lamp are adopted respectively.Nikon produces lenses without an aperture adjustment ringMinolta尼康HF螺旋型调焦螺旋福库斯这类镜头

23、镜头前端不转动，方便使用定制的遮光罩和偏振镜。西格玛高频交易镀膜工艺高保真换乘roleiflex照相机镜头的多层镀膜标志禄莱HSM超声波马达高超声速电机可以实现无声、快速响应的AF/MF和全时MF。西格玛如果内调焦内部聚焦常规的镜头是靠移动整个镜头系统或者移动前镜组来实现对焦。在长焦和长焦微距镜头中，标记有中频/射频的是靠移动镜头内部的镜片组来实现对焦的，大大地改善了微距能力。采用中频/射频的好处是：保持在任何焦点处镜头的实际尺寸不改变。尼康西格玛腾龙时名是影象稳定器图像稳定剂这类镜头安装有影象稳定器，可以在一定范围内抵消手抖而引起的影象模糊。佳能九IX尼克尔/ /用于尼康APS相机的镜头尼康

24、l豪华豪华属于专业镜头，通常镜头前端有红色装饰圈。佳能LD低色散镜片低色散类似ED玻璃腾龙M / A调焦方式手动/自动对焦手动/自动调焦切换尼康宏微距宏表示该镜头具有微距拍摄能力，通常都是达到1:2及以上国会议员多层镀膜多层镀膜微型的微距微型的表示该镜头具有微距拍摄能力。尼康迷你变焦小型变焦镜头迷你变焦形容镜头的小巧mm多种曝光模式多模式为能够实现快门速度优先和程序曝光的镜头类型康泰m.o.d最近对焦距离最小对象的距离腾龙NIC尼康集成镀膜尼康集成涂层尼康公司的一种镀膜技术。尼康尼克尔尼康镜头/ /尼康公司生产的镜头尼康尼克尔E尼康经济型镜头尼康经济型镜头尼康个人计算机透视控制观点控制尼康pe

25、ntax-apentax-a系列镜头/ /一个系列MF镜头宾得pentax-a *pentax-a系列镜头/ /一个系列MF大口径镜头宾得pentax-fpentax-f系列镜头/ /F系列镜头第一代AF，AF镜头宾得pentax-f *pentax-f系列镜头/ /F系列大口径镜头第一代AF，AF镜头宾得宾得FA宾得FA系列镜头/ /足总系列镜头第二代AF，AF镜头宾得宾得FA *宾得FA系列镜头/ /足总系列大口径镜头第二代AF，AF镜头宾得pentax-mpentax-m系列镜头/ /我系列MF镜头宾得pentax-m *pentax-m系列镜头/ /我系列MF大口径镜头宾得反射折反镜头

26、反射赞成的意见专业专业图丽生产的，镜头前端带金色环的AT-X镜头时名R红外线红外线红外线摄影时调焦基线标志，刻在镜头的镜筒上射频后部调焦后聚焦基本同如果尼康西格玛时名联合国安全理事会单层镀膜单层涂层单层镀膜SD超低色散镜片超低色散类似ED镜片时名SiC尼康超级集成镀膜超级尼康集成涂层NIC的改进方法。尼康SL图丽定焦镜头/ /sz-x系列MF定焦镜头时名SMC超级多层镀膜超级多层涂层宾得特有的镜头镀膜技术宾得软焦点柔焦镜头软焦点佳能美能达宾得服务提供商超级性能超级的性能腾龙生产的高性能大口径镜头腾龙SSM超声波马达超声波电机可以实现无声、快速响应的AF美能达STF影象平滑光滑反式焦点在STF镜

27、头上通过一片安装在光圈附近位置上的称作切趾滤波（变迹滤镜）的光学元件，使得镜头中心部分的通光量较多，而越趋向周边时通光量较少。为此，在焦外成像部分形成轮廓渐淡，形成比较理想的柔软虚像。美能达s-uds-ud玻璃超级UD玻璃光学性能接近萤石，一片s-ud镜片的作用相当于一片萤石镜片的作用。佳能SWM超声波马达沉默波电机可以实现无声、快速响应的AF尼康sz-x图丽变焦镜头/ /sz-x系列MF变焦镜头时名T *蔡司镀膜/ /一种Carl Zeiss镜头独有的镀膜工艺蔡司遥长焦遥薄层色谱法双层镀膜两层涂层TS倾斜和移轴倾斜和移位透视调节镜头得克萨斯东南铁路同TS，但是属于佳能专用镜头佳能UC超紧凑过激的契约这类镜头体积小、重量轻。西格玛UC镀膜工艺超涂层柯尼卡镜头的镀膜技术柯尼卡UDUD玻璃UD玻璃光学性能接近萤石，两片UD镜片的作用相当于一片萤石镜片的作用。佳能超声波超声波马达超声波同USM佳能USM超声波马达超声波电机可以实现无声、快速响应的AF佳能v自拍标志vorlaufz