产品详细描述：TheWidest2/3"Pro-VideoLensw/2xYJ13x6BIRSYJ13x6BKRSCanonisproudtointroducetheYJ13x6B,whichhasemergedfromCanon'sexceptionalPro-VideoWideLensYJ12x6.5B.ThenewYJ13x6BsurpassesPro-VideoWidelensesbyofferingtheWidestfocallength(6mm),theHighestzoomratio(13x),andtheFastestzoomspeed(1.2secfromwideendtoteleend).Inadditiontoh***ingCanon'sinnovative3-groupInternalFocus(IF)TechnologyandexclusiveShuttleShotFunction,itsnewergonomicallydesigneddriveunitaccountsforitsidealbalanceandcomfort.IFTechnologyPro-VideocamerapeoplecantakeadvantageofCanon'sbreakthroughtechnologythatbroadcastersh***eenjoyedforyears-InternalFocus(IF).InternalFocustechnologywaspioneeredbyCanonandfirstintroducedintotheirBroadcastENGlenses.Ithassincebecometheindustry-standard.InternalFocusisasystemwherethefrontendofthelensremainsstationaryanddoesnotrotate.Onlyinternalelementsmovewhenfocusing.InternalFocusenhancesopticalperformanceandprovidesseveraluserbenefits:-IFimproveschromaticaberrati***,thusincreasingresolution.-IFisnotsensitivetochangeinobjectdistances.-IFdecreasesflarebyuseofsquarefood.-IFenablesahigherlevelofcreativefilterwork.-Evenhe***yopticalaccessoriesattachedattheendoftheLensdoesnotaffectthefocusingoperation.NewErgonomicDriveUnitThenewergonomicallydesignedDriveUnitachievesanidealbalanceandcomfortbyh***ingittilttoanangle.Inaddition,thesizeoftheunithasbeenminimizedtocomfortablyfitinthepalmofthehand.Overall,itimprovesthefeelingofunitybetweentheuserandthelens.ShuttleShotSwitchTheShuttleShotfunctionON/OFFswitchcanalsobeallocatedtoeithertheVTRorRETswitchesbymeansofaDIPswitch.RibbedSurfaceTheribbedsurfaceonthebottomoftheDriveUnitprovidesbetterhandlingcontrol.GripSupportAllowsausertosecurelygriptheDriveUnitwithoutpressingontheVTRorShuttleShotbutt***.LensModelNumberYJ13x6BKRSZoomRatio13xBuilt-inExtender-RangeofFocalLength(withExtender)6~78mmMaximumRelativeAperture(withextender)1:2.0at6~58mm1:2.7at78mmAngularfieldofview(withExtender)4:3AspectRatio(8.8x6.6mm)72.5°x57.6°at6mm6.5°x4.8°at78mmMinimumObjectDistance(M.O.D.)0.4m(10mmwithMacro)ObjectDimensi***atM.O.D.(withExtender)4:3AspectRatio(8.8x6.6mm)68.1x51.1cmat6mm5.0x3.8cmat78mmze(WxHxL)165.4x105.1x211.7mmApprox.Mass1.54kg(3.39lbs)MacroYesYesLensModelNumberYJ13x6BIRSZoomRatio13xBuilt-inExtender2.0xRangeofFocalLength(withExtender)6~78mm12~156mm(2.0x)MaximumRelativeAperture(withextender)1:2.0at6~58mm1:2.7at78mm1:4.0at12~116mm1:5.4at156mmAngularfieldofview(withExtender)4:3AspectRatio(8.8x6.6mm)72.5°x57.6°at6mm6.5°x4.8°at78mm40.3°x30.8°at12mm(2.0x)3.2°x2.4°at156mmMinimumObjectDistance(M.O.D.)0.4m(10mmwithMacro)ObjectDimensi***atM.O.D.(withExtender)4:3AspectRatio(8.8x6.6mm)68.1x51.1cmat6mm5.0x3.8cmat78mm34.1x25.6cmat12mm(2.0x)2.5x1.9cmat156mmze(WxHxL)165.4x105x234.8mmApprox.Mass1.74kg(3.83lbs)MacroYesYes)