无敌重炮——AF-S200-400mmF4G ED VRⅡ镜头试用
长焦新霸王佳能全新100-400深度评测
长焦新霸王佳能全新100-400深度评测演变历程 在佳能的镜头群⾥有这样⼀⽀传奇的镜头，它的第⼀代产品于1998年推出，⾄今已经有16年的历史。
它的⽤户保有量⾮常之多，⽆论在风光、体育、野⽣和⼈像题材中都可以看到它的⾝影。
它也被⽤户们亲切的称之为“⼤⽩”。
它就是佳能全新的远摄变焦镜头EF 100-400mmf/4.5-5.6L IS USM。
说起这⽀100-400mm镜头，有关它⾝上的故事可太多了：它和EF 28-300mm f/3.5-5.6L IS USM是⽬前佳能仅有的两⽀采⽤了推拉式变焦的镜头，尽管它的变焦⽅式让⼤多数⼈使⽤起来有点不习惯，但“⼤⽩”的⼝碑在佳能镜头群⾥那绝对是数⼀数⼆的。
因为它确实有不少优点：第⼀代佳能⼤⽩ 1 焦段合适 这⽀变焦镜头变焦⽐达到了4倍，涵盖了100mm到400mm的范围。
对于拍摄激烈的运动⽐赛，野⽣动物以及⼈像等等都⾮常适合。
应⽤题材⾮常的⼴泛，这样也促成了它拥有众多⽤户的原因。
2 具备了防抖系统 在1998年那个年代拥有防抖系统的镜头绝对的属于⾼级产品。
对于这样的长焦镜头，佳能给它安装上IS防抖，也是吸引⽤户的⼀项重要领先技术。
毕竟在胶⽚年代，防抖可以⼤⼤的提⾼出⽚率，减少不必要的经济损失。
佳能凭借“⼤⽩”的优秀⼝碑⼀直坚持了16年没有更新。
但在数码时代快速的变⾰之下。
⽼“⼤⽩”最终还是有点⼒不从⼼了。
于是在万众期待中佳能在不久前推出了它的更新换代版EF 100-400mm f/4.5-5.6L IS II USM。
新镜头也随之有了⾃⼰的昵称“⼤⽩兔”。
这⽀新100-400镜头针对⽼镜头的⼀些缺憾进⾏了改进： 1 从推拉变焦变为旋转变焦 ⽼镜头的推拉变焦的确不能让多数⼈适应。
因此新款镜头改进成了正常的旋转式变焦。
2 升级了IS防抖系统 ⽼镜头虽然配备了IS系统，但由于年代久远，当时的⽼技术防抖效能并不让⼈满意，这次新镜头针对不同的拍摄场景升级到了三种防抖模式，⽽防抖效能也从⽼的2级升级到了4级防抖。
ExSite 增强爆炸抗性摄像头系统说明书
C4017 / Revised 9-19-19International Standards Organization Registered Firm;ISO 9001 Quality SystemExSite ® Enhanced Explosionproof Camera SystemHIGH RELIABILITY, FULL HD FIXED IP SYSTEMS Product Features•Up to 1920 x 1080p Resolution Wide Dynamic Range (WDR), 30x zoom lens, and Superb Low light Performance •Dual Stream H.264 IP Video with Smart Compression •Rated to Operate from -60 to +60° C while in Compliance to T6 Surface Temperature (<85° C ) Hazardous Location Regulations •316L Billet Stainless Steel Electro Polished Construction •Standard IP Ethernet Connection and Integrated Transmission Options including Fiber, Ethernet over Coax, and UTP Extension •Full Suite of Built-In Analytics including Adaptive Motion Detection, Abandoned Object, and More •Electronic Image Stabilization •ONVIF Profiles S, G, and Q Conformant•Efficient Installation with a Safety Attach Point, and Simple Wire Termination Methods.•Dual Entry Ports to Separate Data and Power Cables•Certifications: FCC Part 15, CE, UL/cUL, ICES-003, RCM, S-Mark, KC •Hazardous Location Certifications: IECEx, ATEX, INMETRO, EAC Ex, CCOE, UL/cUL •Marine Certification: DNVExSite Enhanced Series camera systems are designed to meet demanding explosionproof requirements, providing high reliability,ease of installation, and best-in-class imaging and technology. The ExSite Enhanced Series is designed for rugged environmental applications including oil and LNG facilities, refineries, on and offshore drilling rigs, and on-board marine applications. Featuring rugged 316L stainless steel construction that has been subjected to extensive vibration and environmental testing make it ideal for use in the most extreme conditions of temperature, moisture, ice, and dust.The system can operate from –60° to 60°C (–76° to 140°F) while maintaining compliance to the T6 (<85°C) surface temperature specifications.ExSite Enhanced Series cameras are easy to install and adaptable to most operational needs. The camera has dual-entry ports, allowing for separate transmission and power cables, and it is adaptable to most transmission methods via SFP/FSFP modules. ExSite Enhanced cameras support a range of input power options with a new 48 VDC option that enables installation in DC-only facilities. ExSite Enhanced cameras also come standard with wipers and sun shrouds,capturing desired video regardless of the weather.The ExSite Enhanced Series provides industry-leading image quality using a Full HD 1080p camera with 30x zoom producing up to 60images per second. The ExSite Enhanced system has Surevision 3.0technology, providing excellent picture quality in the challenging lighting conditions common to hazardous areas with 130db wide dynamic range (WDR), and low-light imaging performance down to .03 lux. The camera’s image defog capability increases video quality in poor visibility conditions. And with anti-bloom, 3D noise filtering,and enhanced tone mapping, ExSite Enhanced with Surevision 3.0technology offers the finest video quality in the explosionproof market.EXSITE ENHANCED FIXED SERIESAdditional Features•Integrated Wiper•Sun Shroud, and Heater/Window Defroster•Configurable On-Screen Displays•4 Alarm Inputs•2 Relay Outputs (1 is dedicated for the washer)•Autofocus with Manual Override•Auto Iris with Manual Override•Dual cable entries for multiple data and power configurations •Easily accessible internal microSD storage for local recording (ONVIF Profile G)•1000Base-T / 100Base-T ethernet and SFP/FSFP connection•SFP/FSFP modules to support fiber, ethernet-over-coax (EoC), or UTP •Compatible with Third Party Explosionproof Wash Systems•Manual 360° Pan and 180° Tilt Adjustments with optional accessory mount•Remote hard-reset capability allows for maintenance without physical access to the cameraPELCO ANALYTICS BEHAVIORSExSite Enhanced includes nine user-configurable behaviors, with up to three analytics behavior active at any one time.•Abandoned Object: Detects objects placed within a defined zone and triggers an alarm if the object remains in the zone longer than the user-defined time allows.•Adaptive Motion Detection: Detects and tracks objects that enter a scene and then triggers an alarm when the objects enter a user-defined zone.•Camera Sabotage: Detects contrast changes in the field of view. This behavior triggers an alarm if the lens is obstructed by spray paint, a cloth, or lens cap or if there is any unauthorized repositioning of the camera.•Directional Motion: Generates an alarm when a person or object moves in a specified direction over a user defined “trip wire” location.This behavior is often used where personnel or vehicles are supposed to enter or exit a scene going a specific direction; subjects coming from the disallowed direction will trigger the analytic alarm.•Loitering Detection: Identifies when people or vehicles remain in a defined zone longer than the user-defined time allows. This behavior is effective in real-time notification of suspicious behavior in sensitiveareas.•Object Counting: Counts the number of objects that enter or pass through a user defined zone.•Object Removal: Triggers an alarm if an object is removed from a user-defined zone.•Stopped Vehicle: Detects vehicles stopped near a sensitive area longer than the user-defined time allows. SOFTWARE FEATURES•Multilingual menus•Password protection•32 window blanks, configurable in size•Pelco analytics including eight user-configurable behaviors •Smart Compression, reducing bandwidth consumption while still providing high quality imagingCAMERA/OPTICSSensor Type1/2.8-inch Type Exmor CMOS Sensor Optical Zoom30XDigital Zoom12XMaximum Resolution1920 x 1080Aspect Ratio16:9Lens f/1.6 ~ f/4.7, focal length 4.3 mm (wide) ~129.0mm (tele)Horizontal Angle of View63.7° wide - 2.3° teleLight Sensitivity*Color (33 ms)0.03 luxColor (250 ms)0.008 luxMono (33 ms)0.004 luxMono (250 ms)0.001 luxDay/Night Capabilities YesShutter Range1/1 ~ 1/10,000 secSignal-to-Noise Ratio>50dBIR Cut Filter YesWide Dynamic Range130 dbIris Control Auto iris with manual override Backlight Compensation YesAutomatic Gain Control YesActive Noise Filtering Yes; 3D Noise FilteringElectronic ImageStabilization (EIS)Yes*Sensitivity in lux for 90% reflectance, f/1.6 (wide angle), 50 dB gainat 30 IRE (30% of signal level) with Sensitivity Boost OFF; 4X improvement to sensitivity with Sensitivity Boost ONVIDEOVideo Encoding H.264 High, Main, or Base profiles andMJPEGVideo Streams Up to 2 simultaneous streams; the secondstream is variable based on the configurationof the primary streamFrame Rate Up to 60, 30, 25, 15, 12.5, 10, 8.333, 7.5, 6, 5,3, 2.5, 2, 1 (depending on the coding,resolution, and stream configuration) Available ResolutionsNETWORKEthernet Interface Ethernet (1000Base-TX or100Base-TX)Auto MDI/MDI-XAuto-negotiate/manual settingEthernet Cabling Type Cat5e or betterFSP/FSFP Interface Supports Pelco FSFP Series Transceivers(input models) and third-party MSACompliant TranceiversSupported Protocols TCP/IP, UDP/IP (Unicast, Multicast IGMP),UPnP, DNS, DHCP, RTP, RTSP, NTP, IPv4, IPv6,SNMP v2c/v3, QoS, HTTP, HTTPS, SSH, SSL,SMTP, FTP, and 802.1x(EAP)UsersUnicast Up to 20 simultaneous users depending onresolution settings (2 guaranteed streams) Multicast Unlimited users H.264Security Access Password protectedSoftware Interface Web browser view and setupPelco System Integration Endura 2.0, Digital Sentry 7.3 andPelco VideoXpert 1.9 (or later)Open API Pelco API or ONVIF Profile S, G, and Q Mobile Application Integrated to Pelco Mobile AppVideo Motion Detection Simple motion detection and camerasabotageLocal Storage SDXC, addressable to 2TBCapture 1–5–10 second video clips on camerasabotage, motion detection, or alarm input;record video continuously in the case ofnetwork outage with option to overwrite;access video through FTP protocol and ONVIFProfile G OPERATING TEMPERATURE*Operating Humidity10% to 100% RH (condensing)Storage Humidity10% to 100% RH (non-condensing)*Cold starts within 240 minutes at specified temperatureGENERALConstruction316L billet electropolished stainless steelwith robotic guided laser welding and 100%hydrostatic pressure testingWindow High transmissivity glassSun Shroud316L stainless steel with laser etched logo(passivated for environmental protection) Weight EXF1230-4N: 38.0 lb (17.2 kg)EXF1230-7N: 38.0 lb (17.2 kg)Effective Projected Area 191 in2(EPA)Reset Capabilities Internal reset button for servicability; remotehard-wire reset; remote software restartELECTRICALAlarmUnsupervised Detects open or closed alarm stateSupervised Detects open and short alarm state withexternal 1-kohm resistor to detect alarmtamperingInput 3.5 VDC maximum, 3.5 mA maximum Relay Output30 VDC, 500 mA maximumInput Power Options48 VDC, 2A or 100-240 VAC, 2A, @ 50/60 Hz Input Voltage Range±10%MECHANICALCable Entry Dual 1.91 cm (0.75-inch NPT) threadedopeningsResolution H.264 High Profile (IP GOP structure)MPx Width Height AspectRatioMaximumIPSRecommendedBit Rate (Mbps)2.0719********:9608.00 2.0719********:930 6.05 0.92128072016:9303.00 0.3680044816:930 2.000.2364035216:930 1.801.2312809604:330 3.80 0.498006084:3302.00 0.316404804:330 1.45 0.083202404:3300.50TemperaturePower48 VDC100-240 V Sustaining Maximum60°C (140°F)60°C (140°F)Minimum–60°C (–76°F)–60°C (–76°F)Ice Free Windows–35°C (–31°F)–35°C (–31°F)Cold Start*–30°C (–22°F)–30°C (–22°F) Storage–60°C to 60°C(–76°F to 140°F)–60°C to 60°C(–76°F to 140°F)Power Consumption (VA / W)*Model DescriptionMin(VA / W)With Heating (VA / W)Max(VA / W)@5° C@-55° CEXF1230-4N Fixed–48 VDC17 / 1740 / 4062 / 6274 / 74 EXF1230-7N Fixed–100-240V29 / 1850 / 4274 / 6685 / 77RECOMMENDED MOUNTSAXM200Adjustable mount for ExSite Enhanced FixedModels; enables manual pan/tilt adjustment WXM200 Wall mount designed to mount theExSite Series system directly to aload-bearing vertical surfaceNote: Requires the use of AXM200 for allExSite Enhanced Fixed models.PXM200 Pedestal mount designed to mount an ExSiteEnhanced Series system directly to ahorizontal surface in either an upright orinverted positionNote: Requires the use of AXM200 for allExSite Enhanced Fixed models. CMXM200 Corner adapter for use with the WXM200 tomount an ExSite Series system to the cornerof a structurePAXM200 Pole adapter for use with the WXM200 tomount a system to a vertical pole or with aPXM200 to mount a system to a horizontalpole; recommended pole diameter is 10.16 to22.86 cm (4to9inches)GENERALConstructionMounts Electropolished 316L stainless steel PAXM200 Mounting Straps316L stainless steelMaximum LoadWXM200 40.8 kg (90 lb)CMXM200 40.8 kg (90 lb)PAXM200 40.8 kg (90 lb)PXM200 40.8 kg (90 lb)AXM20019.5 kg (43 lb)Unit WeightWXM200 5.7 kg (12.6 lb)CMXM200 3.71 kg (8.2 lb)PAXM200 4.17 kg (9.2 lb)PXM200 0.86 kg (1.9 lb)AXM200 4.84 kg (10.7 lb)Shipping Weight (approximate)WXM200 7.71 kg (17.0 lb)CMXM200 5.89 kg (13.0 lb)PAXM200 6.35 kg (14.0 lb)PXM200 1.81 kg (4.0 lb)AXM200 6.5 kg (14.3 lb)Mounting Method RecommendedMounting Surface Recommended HardwareWXM200, CMXM200, and PXM200Solid concrete with recommendedstrength of 3,600psi or 25 MpaFive 3/8-16 x 1-9/16-inch long stainless steel drop-in anchors and five 3/8-16 x 1.0-inch threadlength, stainless steel hex head bolts with stainless steel lock washers (not supplied)Five M10x1.5x20mm, stainless steel socket head bolts with lock washers are supplied with theCMXM200 and PAXM200 for use with the WXM200 wall mount or PXM200 pedestal mount.Steel I beam with a minimum of 1/8-inch wallFive 3/8-16 x 1.0-inch thread length, stainless steel hex head bolts with stainless steel lock washersand 3/8-16 stainless steel nuts (not supplied)PAXM200Steel pole with a diameter of 4to9inches (10.16to22.86cm)Four 5/8-inch wide x 40-inch (101.6 cm) long stainless steel straps to attach the adapter to a pole (supplied)AXM200 Solid concrete with recommendedstrength of 3,600psi or 25 MpaIndustry standard 101.6 mm Bolt circle for use with M8 countersunk screws (not supplied).Steel I beam with a minimum of 1/ 8-inch wall Four M10x1.5 x 16 mm thread strength, stainless steel socket cap head bolts and lock washers are supplied for use with WXM200 or PXM200.WXM200 WALL MOUNTCMXM200 CORNER ADAPTERPAXM200 POLE ADAPTERPXM200 PEDESTAL MOUNTNote: Designed for use with a WXM200 wall mount.Note: Designed for use with a WXM200 to mount a system to a vertical pole or a PXM200 to mount the system to a horizontal pole. Recommended pole diameter is 10.16 to 22.86 cm (4 to 9 inches).Pelco625 W. Alluvial, Fresno, California 93711 United States USA & Canada Tel (800) 289-9100 Fax (800) 289-9150International Tel +1 (559) 292-1981 Fax +1 (559) MODELSOPTIONAL ACCESSORIESECPS-48VDC-5APower supply for use with EXF1230-4NCERTIFICATIONS/RATINGS•FCC Part 15•CE•UL/cUL Listed •ICES-003•RCM •KC•IP66, IP67, and IP68, and Type 4X, Type 6, and Type 6P •S Mark for Argentina*•Vibration: IEC 60068-2-6 Test FcHAZARDOUS CERTIFICATIONS•Tamb -60° C to +60° C•UL/cUL Hazardous Locations Listed per NEC Division for dust and Zone for gas and dust–CLASS I, DIVISION 2, GROUPS A, B, C, D, T6–CLASS II, GROUPS E, F, G, T6–CLASS I, ZONE 1, AEx db op pr IIC T6–AEx tb op pr IIIC T85°C •IECEx UL 17.0011X–Ex db op pr IIC T6 Gb X –Ex tb op pr IIIC T85°C Db X •DEMKO 17 ATEX 1834X – 0539 II 2 G Ex db op pr IIC T6 Gb – II 2 D Ex tb op pr IIIC T85°C Db •INMETRO*BR-Ex d IIC T6•EAC Ex*•CCOE**At the time of this publication, certifications are pending. Consult the factory or for the current status of certifications.MARINE CERTIFICATION•DNVNote: Please contact Pelco for information on the dimensions of the flameproof joints.Model Number PTZ/FixedCamera / LensPower EXF1230-4N Fixed1080p 30x48 VDC, 2A EXF1230-7N100-240 VAC,2A, 50/60 HzVALUES IN PARENTHESES ARE INCHES; ALL OTHERS ARE CENTIMETERS.Pelco, the Pelco logo, and other trademarks associated with Pelco products referred to in this publication are trademarks of Pelco, Inc. or its affiliates. ONVIF and the ONVIF logo are trademarks ofONVIF Inc. All other product names and services are the property of their respective companies.Product specifications and availability are subject to change without notice.©Copyright 2019, Pelco, Inc. All rights reserved.AXM200 ADJUSTABLE MOUNT。
后来居上 佳能EF200-4004L 1.4x评测
后来居上佳能EF200-4004L 1.4x评测提到200-400mm这个焦段镜头，最早要追溯到尼康AI-S时期的AI-S 200-400mm f/4 ED和腾龙的AF200-400mm f/5.6 LD IF（75D/175D)。
真正让业界震撼的是尼康2003年推出的AF-S 200-400mm f/4G IF-ED VR，当时可谓超长焦变焦镜头的新标准。
到了2010年尼康又推出其改进版AF-S 200-400mm f/4G ED VR II，说实话这支镜头的改进并不大，镜头结构依然是17组24片（4片ED），加入了纳米结晶涂层，防抖采用VRII，增加了A/M模式。
EF 200-400mm f/4L IS USM EXTENDER 1.4×该规格镜头可以说一直是尼康的“独门绝学”，直到2011年佳能在CP+展会上展出了正在研发中的EF 200-400mm f/4L IS USM EXTENDER 1.4×的模型样品。
佳能此举打破尼康的垄断局面。
这支镜头除了同样200-400mm f/4规格，还内置了1.4x 增倍镜，使其能够覆盖280-560mm的变焦范围，这对于体育或生态摄影提供了很大的方便。
然而这支镜头的命运与EOS-1DX一样“坎坷”，虽然早在2011年就宣布开发，2012年伦敦奥运会上，摄影师测试这支镜头也算亮个相，但直到2013年CP+展会（2月）上这支镜头仍没有正式发布，展台上提供工程镜头试用。
2013年5月佳能终于正式发布EF 200-400mm f/4L IS USM EXTENDER 1.4×。
那么这支姗姗来迟的大家伙与尼康那支比有什么优势？规格对比（点击放大）左：佳能200-400mm镜头结构右：尼康200-400mm镜头结构佳能在前组镜片中有一片大直径萤石镜片从规格不难看出，尼康是对老版本改进的产品，镜头光学结构依然是17组24片（4片ED镜片），加入了纳米结晶涂层。
尼康镜头参数
尼康镜头及参数数码 2009-10-21 11:37 阅读610 评论0字号：大中小/b644855/d6*******.htm自从1933年起，尼康开始生产尼克尔镜头，直至目前，尼康已在世界各地销售了超过二千五百万支镜头。
尼康的镜头不但在民用领域屡有佳作，更广泛应用于医学，工业，出版等专业行业。
难得的是，自一九五九年，Nikon的第一部单反相机大F问世以来，尼康的单反相机卡口一直延续较稳固的构造。
那么，镜头型号上除了一望即懂的焦距，光圈参数，那些ED、IF、AIS、AFS、D、G等有何含义？有必要先了解一下：AI：Automatic Indexing自动最大光圈传递技术发布于1977年，是Nikon F卡口的第一次大变动。
AI是指将镜头的最大光圈值传递给测光系统以便进行正常曝光测量的过程和方法。
当一个AI镜头被装在兼容AI技术的机身上时，该镜头的最大光圈值在机械连动拨杆的自动接合和驱动下传递给机身的测光系统，以实现全开光圈测光。
Nikon F2A、F2AS、Nikkormat EL2、FT3和FM是第一批获益于这项技术的机身。
代表镜头：Nikkor AI 50/1.4AI-S：Automatic Indexing Shutter自动快门指数传递技术在1981年，Nikon对全线AI镜头卡口进行了修改，以便使它能够与即将投入使用的FA高速程序曝光方式完全兼容，这些修改后的新镜头就是AI-S卡口Nikkor镜头。
根据镜头光圈环和光圈直读环上的橙色最小光圈数字以及插刀卡口上的打磨凹槽，非常容易识别。
当AI-S镜头用于Nikon FA机身时，它能够根据自身的焦距向机身提供信息以选择正常程序或高速程序，在快门速度优先自动曝光方式时，它们能够在非常宽的光照范围内提供一致的曝光控制。
(因为AI-S镜头是为FA上的曝光“自动化”而定制的，因此机身的自动曝光连动拨杆能够非常流畅地控制AI-S镜头的光圈，以达到更为快速而精确的曝光控制)。
活力科技 Speed Dome 2MP 视频分析摄像头说明
Approvals
• Integration Unified Solution ISV Integration Firmware Access Browser Auto Firmware Upgrade GPS Position
TCP, UDP, HTTP, HTTPS, DHCP, PPPoE, RTP, RTSP, IPv4, IPv6, DNS, DDNS, NTP, ICMP, ARP, IGMP, SMTP, FTP, UPnP, SNMP, Bonjour, Sony VISCA, Pelco D, Pelco P 1, Ethernet (10/100Base-T), RJ-45 connector IP address filtering; HTTPS encryption; Password protected user level; Anonymous login; IEEE 802.1X network access control
4, cable without connector 2, cable without connector MicroSDHC, MicroSDXC memory card slot (card not included)
High PoE (IEEE802.3at) / 29.4W; AC 24V / 68W 2605 g (5.74 lb) 200 x 276 mm (7.9'' x 10.9'') High PoE injector (for USA) or Power Adapter (for other countries) Weatherproof (IP67); Bundled dome cover (IK09); Optional dome cover (IK10) Pendant, Wall, Corner, Pole, Parapet -52°C ~ 60°C (-61.6°F ~ 140°F) within 30 minutes at AC 24V, -40°C ~ 60°C (-40°F ~ 140°F) within 30 minutes at High PoE -52°C ~ 60°C (-61.6°F ~ 140°F) for AC 24V, -40°C ~ 60°C (-40°F ~ 140°F) for High PoE 10% ~ 85% RH CE (EN 55022 Class B, EN 55024), FCC (Part15 Subpart B Class B), IP67, IK09 (IK10 option), NEMA 4X, UL (for bundled PoE injector or power adapter)
打鸟神器_试用奥林巴斯M.ZUIKO_DIGITAL_ED_150-400mm_F4.5_TC1.2
镜头的前部加装有代表着奥林巴斯专业镜头的蓝色环带，给人一种专业的感 觉。它内置了一个1.25×的增距镜，为了方便操作，集成式增距镜采用快速开关与 锁定设计，操作非常简单，整个操作过程可在通过取景器取景的同时轻松实现。另 外，它还兼容选配的增距镜M C-14/M C-20，在延长焦距的同时，主镜头的光学性能
图15 图16
现被认为是当今世界上唯一的野生朱鹮 种群。得益于近40余年来的保护，目前 全世界的朱鹮数量重新回到了1万只以 上，这被国际公认为濒危动物保护的 典范。
这次去的是洋县的其中一个拍摄 点，那里有一颗苦楝树，被“鸟导”刻 意训练过的朱鹮，每天早晨和傍晚都会 飞到这颗苦楝树上休息。每年的11月份 前后，全国各地的鸟友都会到这颗苦楝 树前，拍摄朱鹮起飞和降落的瞬间。
试用体会
因2023 Panasonic杯“魅力中国”
图6 笔者手持 OM-1相机+奥林巴斯M.ZUIKO DIGITAL ED 150-400mm F4.5 TC1.25× IS PRO镜头拍摄
照相机 21
2023.12 / 使用报告
图7 白鹭抓鱼瞬间
图8 小䴙䴘
图9 翠鸟 22 照相机
的高速S D卡价格并不便宜，而且性能相比读写速度达到1700M B/s的 CFexpress卡落后太多太多，奥之心应该在后续机型考虑对CFexpress 卡的支持。
这款镜头加入人性化设计，在拍摄 时可以方便调整各项设置与功能。配备 的高精准橡胶对焦环/变焦环，可以实施 精细的操控。这款镜头还具备焦点记 忆功能，方便用户随时保存理想的焦 点位置。
DS-2XE系列爆破防护子弹网络摄像头快速启动指南说明书
DS-2XE Series Explosion-ProofBullet Network CameraQuick Start GuideModel ListDS-2XE6025G0-IDS-2XE6025G0-ISDS-2XE6025G0-IMDS-2XE6045G0-IDS-2XE6045G0-ISDS-2XE6045G0-IM©Hangzhou Hikvision Digital Technology Co.,Ltd.No.555Qianmo Road,Binjiang District,Hangzhou,Quick Start GuideALL RIGHTS RESERVEDAny and all information,including,among others,wordings,pictures, graphs are the properties of Hangzhou Hikvision Digital Technology Co.,Ltd.or its subsidiaries(hereinafter referred to be“Hikvision”). This user manual(hereinafter referred to be“the Manual”)cannot be reproduced,changed,translated,or distributed,partially or whol-ly,by any means,without the prior written permission of Hikvision. Unless otherwise stipulated,Hikvision does not make any warran-ties,guarantees or representations,express or implied,regarding to the Manual.About this ManualThis Manual is applicable to Bullet Network Camera.The Manual includes instructions for using and managing the prod-uct.Pictures,charts,images and all other information hereinafter are for description and explanation only.The information contained in the Manual is subject to change,without notice,due to firmware updates or other reasons.Please find the latest version in the com-pany website(/en/).Please use this user manual under the guidance of professionals.Trademarks Acknowledgementand other Hikvision’s trademarks and logos are the properties of Hikvision in various jurisdictions.Other trademarks and logos mentioned below are the properties of their respective owners.Legal DisclaimerTO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,THE PRODUCT DESCRIBED,WITH ITS HARDWARE, SOFTWARE AND FIRMWARE,IS PROVIDED“AS IS”,WITH ALL FAULTS AND ERRORS,AND HIKVISION MAKES NO WARRAN-TIES,EXPRESS OR IMPLIED,INCLUDING WITHOUT LIMITA-TION,MERCHANTABILITY,SATISFACTORY QUALITY,FITNESS FOR A PARTICULAR PURPOSE,AND NON-INFRINGEMENT OF THIRD PARTY.IN NO EVENT WILL HIKVISION,ITS DIRECTORS, OFFICERS,EMPLOYEES,OR AGENTS BE LIABLE TO YOU FOR ANY SPECIAL,CONSEQUENTIAL,INCIDENTAL,OR INDIRECTDAMAGES,INCLUDING,AMONG OTHERS,DAMAGES FOR LOSS OF BUSINESS PROFITS,BUSINESS INTERRUPTION,OR LOSS OF DATA OR DOCUMENTATION,IN CONNECTION WITH THE USE OF THIS PRODUCT,EVEN IF HIKVISION HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. REGARDING TO THE PRODUCT WITH INTERNET ACCESS,THE USE OF PRODUCT SHALL BE WHOLLY AT YOUR OWN RISKS. HIKVISION SHALL NOT TAKE ANY RESPONSIBILITES FOR AB-NORMAL OPERATION,PRIVACY LEAKAGE OR OTHER DAM-AGES RESULTING FROM CYBER ATTACK,HACKER ATTACK, VIRUS INFECTION,OR OTHER INTERNET SECURITY RISKS; HOWEVER,HIKVISION WILL PROVIDE TIMELY TECHNICAL SUPPORT IF REQUIRED.SURVEILLANCE LAWS VARY BY JURISDICTION.PLEASE CHECK ALL RELEVANT LAWS IN YOUR JURISDICTION BEFORE USING THIS PRODUCT IN ORDER TO ENSURE THAT YOUR USE CONFORMS THE APPLICABLE LAW.HIKVISION SHALL NOT BE LIABLE IN THE EVENT THAT THIS PRODUCT IS USED WITH ILLEGITIMATE PURPOSES.IN THE EVENT OF ANY CONFLICTS BETWEEN THIS MANUAL AND THE APPLICABLE LAW,THE LATTER PREVAILS. Regulatory InformationFCC InformationPlease take attention that changes or modification not expressly ap-proved by the party responsible for compliance could void the user’s authority to operate the equipment.FCC compliance:This equipment has been tested and found to com-ply with the limits for a Class B digital device,pursuant to part15of the FCC Rules.These limits are designed to provide reasonable protection against harmful interference in a residential installation.This equip-ment generates,uses and can radiate radio frequency energy and,if not installed and used in accordance with the instructions,may cause harmful interference to radio communications.However,there is no guarantee that interference will not occur in a particular installation.If this equipment does cause harmful interference to radio or television reception,which can be determined by turning the equipment off and on,the user is encouraged to try to correct the interference by one or more of the following measures:—Reorient or relocate the receiving antenna.—Increase the separation between the equipment and receiver.—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.—Consult the dealer or an experienced radio/TV technician for help FCC conditionsThis device complies with part15of the FCC Rules.Operation is sub-ject to the following two conditions:1.This device may not cause harmful interference.2.This device must accept any interference received,including interfer-ence that may cause undesired operation.EU Conformity StatementThis product and-if applicable-the supplied accessoriestoo are marked with"CE"and comply therefore withtheapplicable harmonized European standards listed underthe the EMC Directive2014/30/EU,the RoHS Directive2011/65/EU.2012/19/EU(WEEE directive):Products marked withthis symbol cannot be disposed of as unsorted municipalwaste in the European Union.For proper recycling,returnthis product to your local supplier upon the purchase ofequivalent new equipment,or dispose of it at designatedcollection points.For more information see:www.2006/66/EC and its amendment2013/56/EU(batterydirective):This product contains a battery that cannot bedisposed of as unsorted municipal waste in the EuropeanUnion.See the product documentation for specific batteryinformation.The battery is marked with this symbol,whichmay include lettering to indicate cadmium(Cd),lead(Pb),or mercury(Hg).For proper recycling,return the battery toyour supplier or to a designated collection point.For moreinformation see:.Industry Canada ICES-003ComplianceThis device meets the CAN ICES-3(B)/NMB-3(B)standards require-ments.These instructions are intended to ensure that the user can use the product correctly to avoid danger or property loss. Laws and RegulationsThe device should be used in compliance with local laws, electrical safety regulations,and fire prevention regulations. TransportationKeep the device in original or similar packaging while transporting it.Power SupplyThe input voltage should conform to IEC60950-1standard: SELV(Safety Extra Low Voltage)and the Limited Power Source.Refer to the appropriate documentation for detailed information.DO NOT connect multiple devices to one power adapter,to avoid over-heating or fire hazards caused by overload. Make sure the plug is properly connected to the power socket.System SecurityThe installer and user are responsible for password and security configuration and its settings.BatteryImproper use or replacement of the battery may result in explosion hazard.Replace with the same or equivalent type only.Dispose of used batteries in conformance with the local codes.MaintenanceIf the product does not work properly,please contact your dealer or the nearest service center.We shall not assume any responsibility for problems caused by unauthorizedrepair or maintenance.A few device components(e.g.,electrolytic capacitor) require regular replacement.The average lifespan varies, so periodic checking is recommended.Contact your dealer for details.CleaningPlease use a soft and dry cloth when clean inside and outside surfaces of the product cover.Do not use alkaline detergents.Using EnvironmentWhen any laser equipment is in use,make sure that the device lens is not exposed to the laser beam,or it may burn out.Do not expose the device to high electromagnetic radiation or dusty environments.For indoor-only device,place it in a dry and well-ventilated environment.Do not aim the lens at the sun or any other bright light. Make sure the running environment meets the requirement of the device.The operating temperature shall be-30°C to 60°C(-22°F to140°F),and the operating humidity shall be95%or less(no condensing).Do not place the camera in extremely hot,cold, dusty or damp locations,and do not expose it to high electromagnetic radiation.EmergencyIf smoke,odor,or noise arises from the device,immediately turn off the power,unplug the power cable,and contact the service center.Time SynchronizationSet up camera time manually for the first time access if the local time is not synchronized with that of the network.Visit the camera via Web browse/client software and go to time settings interface.InstallationMake sure the device is firmly secured to any wall or ceiling mountings.Be sure that there is enough space to install the camera and accessories.Make sure that the device in the package is in good condition and all the assembly parts are included.Make sure that the wall is strong enough to withstand at least4times the weight of the camera and the mount.The standard power supply is24VDC,please make sure your power supply matches with your camera.Make sure that the power has been disconnected before you wire,install,or disassemble the device.Make sure that no reflective surface is too close to the camera lens.The IR light from the camera may reflect back into the lens causing reflection.For device with this sticker,this device is intended for installation in a restricted access location,access can only be gained by service persons or by users who have been instructed about the reasons for the restrictions applied to the location and about any precautions that shall be taken. GroundingThe both internal and external grounding shall be connected reliably.Ground wire cross-sectional area of not less than the phase connector cross-sectional area level,at least4mm².Intended use of the cameraATEX:II2G Ex db op is IIC T6GbII2D Ex op is tb IIIC T80℃Dbll:Device group,ll refers to the gas or dust in non-mining environment2:Device usage classification(Zone1,21)G:Gas environmentD:Dust environmentEx:Explosion-proof signdb:Flameproof enclosures"d",EPL"Gb";db/tb:Dust-Protection by enclosure"t";EPL"Db";op is:Optical radiation,inherently safellC:Classification sign,typical gases are hydrogen and acetylene.lllC:Classification sign,conductive dust.T80℃:for dust environment,maximum surface temperatureT6:Temperature group for gas environment,maximum surface temperature is85℃Gb/Db:Protection level of the deviceIECEx:Ex db op is IIC T6Gb/Ex op is tb IIIC T80℃Db Ex:Explosion-proof signdb/tb:Protection by enclosureop is:Optical radiation,inherently safellC:Classification sign,the hydrogen in gas environmentlllC:Classification sign,conductive dust in dust environmentT80℃:Maximum surface temperatureT6:Temperature group,maximum surface temperature is85℃Gb/Db:Protection level of the deviceHazardous Area Classification:Zone1,Zone2,Zone21,Zone22.IP Degree:IP68(2m,2h)Ex Standards:IEC60079-0:2017EN60079-0:2012+A11:2013IEC60079-1:2014EN60079-1:2014IEC60079-31:2013EN60079-31:2014IEC60079-28:2015EN60079-28:2015Special Conditions for Safe Use:1.Ambient Temperature:-30°C to+60°C.2.DO NOT OPEN WHEN ENERGIZED.3.When assembly,operation and maintenance,the operator must follow the requirements of the EN/IEC 60079-14:latest version Explosive atmosphere-Part14: Electrical installation design,selection and erection,beside of the manufacturer’s operation instruction or its National equivalent.4.Repair and overhaul shall comply with EN/IEC60079-19: latest version or its National equivalent.5.The both internal and external earthing shall be connected reliably.6.The cable is fixed by cement,end-user cannot replace it by themselves.Industry Canada ICES-003ComplianceThis device meets the CAN ICES-3(B)/NMB-3(B)stan-dards requirements.Warning:1.This is a class B product.In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.2.The cables cannot be exposed to the explosion-hazardous environment.3.The connections of the cables must be placed in non-explosive areas or the explosion-proof junction box that can be used in explosive environment.OverviewExplosion-proof network camera is a video security product capable of smart encoding and network transmitting.It adopts an embedded system and a high-performed hardware process platform to achieve good stability and reliability. You can visit and configure your camera via web browser and client software.Explosion-proof network camera adopts a stainless steel enclosure,receiving an IP68rating for ingress protection. Application Scenarios:bus,car or other vehicles,etc.With-I model camera has LEDs and supports IR function,so it must follow the requirements of IEC60079-28:2015 and EN60079-28:2015.Explanation of model naming:Nameplate:Activate and Access Network CameraScan the QR code to get Activate and Access Camera.Note that mobile data charges may apply if Wi-Fi is unavailable.UD12125B-B。
高速长焦变焦镜头
性能表现 新镜头几乎在所有方面都超越了老 款镜头，光学表现非常优异。在任
—70mm — 100mm —135mm — 200mm
色散
0.33
在中间焦段，这支镜头的色
散控制非常到位。
畸变
1.45
这一项在与“老大哥” f/2.8 镜头对比时败下阵来，不过
参考价格：约13600元
高质量高价格
适用卡口丨尼康F
这
是尼康最新一代的70200mm f/28镜头，和 它的定位一样，它的
表现绝对是旗舰级的。新镜头采用
了全新的光学结构，镜组中含有1 片萤石镜片以及多达6片ED镜片以 及1片HRI镜片，而且新镜头使用 了尼康的纳米结晶镀膜。升级后的
双模式VR防抖系统可以自动侦测 摇拍的方向，而且新加入的Sport
通过后期软件很好进行校正。
何焦距上，都可以得到相当不错的 成像表现。
心亡5纟纟口士
这是一支性能强劲 的产品，它的价格 并不算实惠。喜欢 大光圈的爱好者可 以用类似的价格买 到第三方厂商的 f/2.8镜头。
★★★★ A g r出类拔萃
"
功能特性 做工&操控 性能表现
性价比
微信:YXSJZZ
尼康AF-S 70-200mm f/2.8E FL ED VR
锐度
无论是实验室中还是实际拍 摄，这支新尼康镜头的光学 性能都让人完全放心。
参考价格：约12600元
小幅度更新
适用卡口丨佳能EF
佳
能第二代的7O-2OOmm f/2.8镜头以其优秀的光
学性能赢得了良好的口
碑，在最新的第三代上，佳能并没
超长焦变焦镜头
参考价格：约¥14000 参考价格：约¥8000 参考价格：约¥13500 参考价格：约¥4500 参考价格:约¥5800 参考价格：约¥10000 参考价格:约¥5000 参考价格：约¥9900
器材横评超长焦变焦镜头
佳能 EF 100-400mm f/4.5-5.6L IS II USM
参考价格：约14000元
锐度
在全开光圈时，这支镜头成
像最不佳的焦段是400mm,
此外焦段表现非常出色。
—200mm — 300mm —400mm — 500mm
色散
短焦距0.3长焦端2.21
短焦距端表现优异，中间段 和长焦端都不是很好。
畸变
短焦距1.22长焦端1.14
畸变程度可以接受，在横评 中属于平均水平。
亠士 心纟口
这支镜头缺少高级 特性，不过在握持 手感，光学表现以 及尤其在性价比上 都完全可以不输给 任何同级别鏡头， 非常难得。
对焦迅速，防抖系统非常高效。光 学素质也已经非常优秀。不过在长 焦范围内还是无法与横评中其他达
5 适马150-600mm f/5-6.3 DG OS HSM | C 6 适马150-600mm f/5-6.3 DG OS HSM | S 7 腾龙100-400mm f/4.5-6.3 Di VC USD 8 腾龙SP 15O-6OOmm f/5-6.3 Di VC USD G2
100 —— 摄影之友•影像视觉 —— SEPTEMBER 2019
旋转变焦的新“大白”
适用卡口 I佳能EF
这
款镜头的上一代被大家 称为“大白”，其长号 式的推拉变焦机构令人
E卩象深刻，不错的光学素质也为佳
能积累不少口碑。在新“大白”上,
变焦机构变为了常见的旋转式，同 时增加的还有全天候密封特性。
尼康经典镜头选配不完全手册
尼康经典镜头选配不完全手册文章导读欲与定焦试比高尼康最好的三变焦∙金广角17-35/2.8ED∙王者风范AF-S 28-70/2.8 ED∙后浪推前浪：AF-S VR 70-200/2.8G IF ED美人赠我六枚玉尼康人像镜头∙nikkor 135DC/F2∙nikkor 105DC/F2APS当家花旦尼康最值得购买的三支DX镜∙DX的银广角Nikkor AF-S DX 12-24/4 G IF-ED∙镜皇接班人AF-S DX Zoom Nikkor ED 17-55mm F2.8G∙一镜天涯Nikkor AF-S DX VR Zoom-Nikkor ED 18-200mm F3.5-5.6G (IF) 没有用过这5支定焦镜头就不算用过尼康∙我就是尼康：Nikkor 28/1.4∙不像尼克尔的AF 35/2D∙死硬的50/1.4D∙最强微距镜105/2.8 micro∙爱我所选AF 180/2.8（IF）ED世间仅此一家尼康特有的一些牛头∙第一支：绝无仅有的变焦微距镜：Nikon AF 70-180/4.5-5.6 D ED Micro∙尼康的镇店之宝：Fisheye-Nikkor 6mm f/2.8 Auto∙长焦之王：Reflex-Nikkor 2000mm f/11你知道吗？非球面镜片的制作工艺欲与定焦试比高尼康最好的三变焦像质超越定焦的三只变焦镜头如果你喜欢定焦镜头的优异成像质量，但又不想舍弃变焦镜头的便利的话，那么顶级变焦镜就是你的唯一选择了。
尼克尔变焦镜头数量巨大，但能接近定焦镜头的成像素质的只有寥寥数支，其中最优秀的莫过于被称为金广角的17-35/2.8ED，被称为小钢炮的80-200/2.8 ED和标准变焦镜头的王者AFS 28-70/2.8 ED这三支了。
金广角17-35/2.8ED金广角参考价格：￥10200大名鼎鼎的金广角zoom Nikkor 17-35/2.8ED，是尼康广角变焦镜头中的扛鼎之作，这是一支很特别的镜头，它的成像素质超越了同焦段的定焦镜头，它是尼康仅有的使用了“切削非球面镜片的”三只镜头之一。
NIKON镜头以及机身选择
AF-S VR 70-300mm f/4.5-5.6G IF-ED
AF 80-200mm f/2.8D ED
AF VR 80-400mm f/4.5-5.6D ED
AF-S 200-400mm f/4G ED VR II
定焦镜头：
AF-S DX 18-55mm f/3.5-5.6G ED II
AF-S DX 18-55mm f/3.5-5.6G VR
AF-S DX 18-70mm f/3.5-4.5G IF-ED
AF-S DX 18-105mm f/3.5-5.6G ED VR
AF-S DX 18-200mm f/3.5-5.6G ED VR II
一般来说，ED镜片越多，镜头的抗色散能力就越强；ASPH越多，镜头的抗畸变能力就越出色。
ED与ASPH的造价均不菲。因此在众多尼克尔镜头中，这两种镜片的数量很有限。
现在市场上能买到的全新的最便宜的尼克尔镜头大概就是AF-S DX 18-55mm f/3.5-5.6G ED II了，
售价只有区区五六百元，然而它采用了一块ED镜片，因此具有不错的放色散能力，
优点：有超广有长焦，发挥余地大；
缺点：中焦段缺失。
--------------------------------------------------------------------------
3.三只变焦
AF-S DX 10-24mm f/3.5-4.5G ED+AF-S DX 16-85mm f/3.5-5.6G ED VR+AF-S VR 70-300mm f/4.5-5.6G IF-ED，￥6000+￥4400+￥3800=￥14200
佳能尼康镜头大排行
数码单反摄影镜头：佳能镜头谱佳能作为数码单反行业当之无愧的老大，在镜头库这一项上有着无可替代的地位。
经典的红圈L(Luxury)镜头显示了它尊贵的地位，而针对APS-C单反的EF-S镜头中也不乏精品；USM超声波马达保证了对焦的迅速和安静；独有的IS防抖技术则提供了更高效稳定的拍摄。
摄影爱好者中有句俗语：“佳能的定焦，尼康的变焦；佳能的长焦，尼康的广角”。
这也在非严格的层面上，反映了佳能和尼康在镜头研发设计上的侧重点。
无疑在当今所有单反镜头中，佳能的定焦镜头都是最耀眼的成员，部分镜头更是达到了德系镜头的水准，甚至有所超越。
在200端和85端的AF镜头中，更是拥有了具备了世界独一无二水准的218L和85L。
庞大的镜头库和卓越的素质，让佳能的用户能更容易的选择合适的镜头，甚至可以仅考虑焦端，而不用过多考虑画质，因为每一枚镜头，都具备了相当高的水平。
闲暇之余，针对一些用过的佳能镜头和一些Photozone的参考，对佳能当前55枚市售的镜头做了一个非严格排名。
仅仅表达自己对佳能镜头的一个主观的分析和评判，定有不妥之处。
如须专业测评，请参考Photozone网站和赵嘉的《佳能镜界》、《兵书十二卷》等书。
排名标准:1.仅针对原厂镜头, 限佳能EF、EF-S镜头。
部分移轴镜，增距镜及少数微距不在内。
2.焦段覆盖：10mm-400mm。
3.按成像，色彩, 焦段，便携性，口碑综合评估。
与价格、性价比无关。
4.停产镜头仅部分经典镜头入选(如218L)。
5.若为二代镜头，以二代头作为标准(如ISXB II代，替代ISXB和XB)。
第一档(十二枚镜头)：1.EF 200mm f/1.8L (220L)2.EF 85mm f/1.2L II3.EF 400mm f/2.8L IS II4.EF 14mm f/2.8L II5.TS-E 17mm f/4L6.EF 35mm f/1.4L7.EF 300mm f/2.8L IS8.EF 180mm f/3.5L Macro9.EF 24mm f/1.4L II10.EF 50mm f/1.2L (50 f/1.0)11.TS-E 24mm f/3.5L II12.EF 135mm f/2L点评: 这十二枚镜头无疑代表了佳能镜头的最高素质。
佳能和尼康镜头的选择与点评
佳能和尼康镜头的选择与点评【转自蜂鸟】最早在蜂鸟看的，在无忌貌似也见过，现在这个帖子不知道为什么没了。
在此转载仅供参考。
特别说明：本文免费，不需要注册扣分下载，如果觉得本文能解答您的部分疑惑，值得收藏那么点击下方的“下载此文档”为人民服务哦，摒弃收费！网上有个非常著名的镜头逐个挑系列，是给要新买机子的爱好者们参考所用的。
最近很多朋友想小沾一下摄影这个东西，说实话这个玩意儿门槛很低，但是玩好很难，所以像我这种照不出什么好片子的人就成了个彻头彻尾的器材党。
为了方便大家能够更好的选择镜头的组合，基于我在佳能和尼康两家都游转的经验，在这里我提供一个自己的版本给到大家。
PS：文中介绍的镜头本人全部自己使用过，所以请勿用质疑的语言出现。
1.佳能套机镜头选择EF-S 18-55这是最常见到的套机镜头，要说没什么好说的一点儿都不足为奇。
但是我总是希望能够看到有人拿这只镜头拍出点震撼心灵的照片，有句话说的好啊：当你一无所有的时候，你的心灵才足够强大。
•对焦：对焦速度其实比你想象的快的多，也有USM的版本，速度上没什么差别，因为镜片太轻了，推起来没什么难度。
但是声音上的差别非常大。
•做工：做工确实很差.....所有的部分拧动起来都好像是松松垮垮的。
有的时候又有点儿紧。
•成像：这个吧，我用过一个礼拜这只镜头，我觉得它的主要作用在于能够让你用一种平和的心情去拍摄作品。
总得来说色散、畸变都是这个价位表现，但是色彩在日光下面有种淡淡的日式老镜头的感觉，用它来拍点儿小品什么的非常合适。
EF-S 15-85 & EF-S 18-135今年新出的EFS套机镜头，按我的理解是17-85的接班人。
两支IS的效果都非常非常的好～～作为连个金圈都没给的镜头来说价格有点儿贵的说.....•对焦：18-135的对焦我感觉让我意想不到的好，非常轻盈快速，声音也很小～两支镜头如果一定要比的话，我是觉得倒是18-135的手动调焦实在是有点儿......•做工：都是塑料镜身，但是您如果目的是亮骚的话，强烈建议15-85。
“大炮”升级——尼康AF-S尼克尔300mmf／2.8GEDVRⅡ镜头
影的极佳利器
。 j 对于喜欢在室 外捕捉小昆虫或人像的
’
! j - 一-
用户
百 微 ”
“
镜头 无疑 是最 合适 的选
。
择 。 宾 得的 这 支 s m c P EN TA X — D FA M A C R 0
1 0 0 m m F2 8 W R镜头 应 该能 满足 大部分用户 ．
的需求— — 它不但拥有高贵的 “ Lim it ie ∥ 标
47
头 它 不仅保 留了前 代 产 品扎实 的 做 工 、 优秀 的
学结构 (含3 枚超低色散镜爿)以 及 纳米结晶涂
技术 更 加入了第二 代V R 光 学 防抖技术 其 光 学
抖性 能相当于提升7 4 级快门速度 此外 、 它还增
Байду номын сангаас
了A ／M ( 手动优先 自动 对焦 + A F 优先 ) 模式 可
自动对焦发生意外时自动校正 无 疑是 室内体育
志的铝合金机身 更具备全天候工作的本领 - 配
合宾得 K一 7 这样的悍 将 无 论是 小昆虫 还是 笑 脸
都会手到擒来 。
。 誓淼 二’霞嚣 勰 篡羹
怕是大多数业 余爱好者所 无 法 办到 的 ． 因此 为中焦镜头加上一 支倍率镜无 疑是 一 种更为理 想的替代方式 。 尼 康此支望 远倍率镜虽然会将 镜头的有 效光 圈降低 2 挡 僵却能换来2 倍的焦 距扩 展 而且 它采 用 了1 枚 非 球面 镜 爿设 计 保 证 了优 秀 的对 比度 和 清 晰 度 。
长焦嫁衣
日翟蓝囊啦 嗣
景I 映然怒割 帽
40 0 — 8 2 0 — 1瞌 5
’有。
望远 倍率镜
一 直以来 长焦距定焦镜头是专业摄影师
长变焦也能小清新适马“轻·火箭筒”100-400mmF5-6.3C
长变焦也能小清新适马“轻·火箭筒”100-400mmF5-6.3C几乎每个摄影师都有一个拥有超长焦镜头的愿望，因为他能在同一物距的情况下拍出比常规镜头更大的影像，深受各领域拍摄者的青睐。
F6.3 | 1/320s | ISO 500 | 400mm但是超长焦镜头体积大、重量大、手持拍摄时易抖动。
另外长焦镜头成像倍率大，被摄体移动或相机稍微晃动，影像模糊程度也相应增大，操作难度的提升以及携带的不便则成了长焦摄影领域的“门槛”，不少摄影爱好者也为此放弃了长焦摄影这个领域。
在这个日新月异、瞬息万变的年代,有一样东西是永恒不变、经久不衰的,那就是适马镜头工匠的那份心意。
智慧与创意并具的适马镜头工匠，以设计制造一款更为轻便的超长焦镜头为目标，投入最新的技术，以兼顾高光学性能和轻巧体积为前提，打造“100-400mm F5-6.3 DG OS HSM | Co ntemporary”这款小巧轻便的长变焦镜头。
这支镜头全长约182.3mm，直径约86.4mm相当于一瓶500ml 饮料的大小，而重量仅1,160g相当于2瓶600ml饮料还不到的重量。
F6.3 | 1/800s | ISO 220 | 400mm既然镜头已经足够轻便，那么如果每次拍摄还携带繁重的三脚架的话，就与“轻·火箭筒”设计理念背道而驰了。
为了让“便携性”更突出，100-400mm F5-6.3 DG OS HSM | Contemporary（以下简称100-400mm F5-6.3 C ）除去了镜头脚架的设计，取而代之的是采用新开发的陀螺仪传感器及新设计的防抖组件，通过最新的专用算法发挥理想的防抖效果。
加速感应器能感知相机在所有方向的移动，不论是水平或垂直或对角线方向。
这项技术可以使OS防抖功能非常有效的稳定图像，不论相机是处于横向还是纵向握持状态都能提供约4挡安全快门的补偿能力。
特有的加速度防抖传感器可以自动感知追焦时的相机移动方向，能够在多个方向上自动进行有效的防抖补偿。
视野
视野作者：暂无来源：《摄影之友·影像视觉》 2015年第11期尼康镜头三连发尼康最近发布的新镜头涵盖了广角、中焦和长焦焦段。
尼康最近发布了三支新镜头，覆盖了三个最常用的焦段。
首先是售价在八千元级别的全新AF-S200-500mm f/5.6E ED VR 镜头。
虽然在长焦端略逊于腾龙的150-600mm f/5-6.3 VC 和适马的150-600mm f/5-6.3 OS，但是f/5.6的恒定光圈是两者所没有的。
在使用1.4倍增距镜之后这支镜头的最大光圈为f/8，在尼康很多机型上都能全对焦点自动对焦。
这款镜头中附带遮光罩、镜头软包和脚架环。
考虑到这支镜头庞大的个头，长268毫米，最大直径108毫米，重2.3千克，最后一样配件还是非常有必要的。
不过，相比起售价接近5万元人民币的尼康200-400mm VR 来说，这支新镜头无论价格还是重量都不会给消费者很沉重的负担。
接下来是专业标准变焦镜头24-70mm的升级。
搭载了最新技术的AF-S 24-70mmf/2.8E ED VR 售价折合约人民币15,000元。
这支镜头使用了诸多特殊镜片，包括最新的非球面ED（超低色散）镜片，三片普通非球面镜片，两片ED镜片和HRI （高反射）镜片。
据Cipa的测试结果，最新的VR 防抖技术能提供大约4挡快门的补偿。
官方宣称和上一代24-70mm f/2.8镜头相比，新镜头的对焦速度也提升了50%。
最后一支镜头是AF-S 24mm f/1.8G。
虽然比起尼康的24mm f/1.4G ED小了2/3挡光圈，不过只有后者一般的重量和四千元级别的价位对普通消费者来说很有吸引力。
脚架轻≠承重小捷信的旅行者系列脚架现在重量更轻、强度更高，还换上了球形云台。
捷信的旅行者系列脚架现已全面更新。
这个系列现在共有三种脚架。
1系列（有四节脚管和五节脚管版本可供选择）和2系列的全开高度更高，而新推出的四节脚管的0系列则是该系列中最轻的脚架，重量仅为895克。
顶级变焦远摄尼康新180-400mm镜头试用体验
顶级变焦远摄尼康新180-400mm镜头试用体验展开全文在拿到尼康的这款AF-S尼克尔180-400mm f/4E TC1.4 FL ED VR（以下简称尼康AF-S尼克尔180-400mm f/4E）远摄变焦镜头时有纠结过拍摄的题材。
翻看日历发现周末便是2018年F1中国大奖赛，拍摄目标确定，时间定在周五的训练日，人少能够更加方便且轻松的拍摄。
当然尼康这款镜头重量绝对不能算轻便，配合三脚架使用是必须的。
以下照片均由尼康D5+AF-S尼克尔180-400mm f/4E拍摄焦距：550mm 快门速度：1/320秒光圈：F5.6 感光度：ISO1000焦距：320mm 快门速度：1/320秒光圈：F20 感光度：ISO2000焦距：550mm 快门速度：1/800秒光圈：F5.6 感光度：ISO1000尼康AF-S尼克尔180-400mm f/4E远摄变焦镜头，是尼康首款采用内置增倍镜的尼克尔镜头。
使用内置的1.4倍增倍镜之后焦段可达到约252-560mm。
当然开启了1.4倍增倍镜后，镜头的最大光圈也从F4降低到了F5.6。
能够轻松覆盖180-560mm是这款镜头的卖点之一，无论是风光摄影、体育摄影又或是野生动物摄影，都能够更加方便的进行构图。
焦距：550mm 快门速度：1/1000秒光圈：F5.6 感光度：ISO1000焦距：180mm 快门速度：1/2500秒光圈：F4 感光度：ISO1000前文有提到镜身重量，尼康AF-S尼克尔180-400mm f/4E TC1.4 FL ED VR不算轻便，但了解到这款镜头拥有尼康超远摄镜头中最多的镜片组与最多的镜片时，就发现其实在重量方面，这款镜头做出了很大的提升。
焦距：180mm 快门速度：1/1250秒光圈：F6.3 感光度：ISO1000焦距：400mm 快门速度：1/2000秒光圈：F4 感光度：ISO1000焦距：220mm 快门速度：1/2500秒光圈：F4 感光度：ISO1000尼康AF-S尼克尔180-400mm f/4E采用了19组27片的镜头规格，其中包含8枚低色散ED镜片、1枚萤石镜片以及带纳米结晶涂层的镜片，采用的光学技术和纳米结晶涂层有效减少鬼影和眩光，提供清晰影像。
长焦大炮新王者索尼SEL400F28GM测评
长焦大炮新王者索尼SEL400F28GM测评索尼目前拥有了非常完善的微单无反相机系统，从高像素的α7R 系列到专业的α9几乎覆盖了整个市场需求。
α9的诞生正式宣布了索尼进军高端新闻体育摄影领域，也算圆了当年美能达时代的一个梦想。
而本次测试的主角G大师镜头FE 400mm F2.8 GM OSS超长焦就是α9之后的第二款重量产品，作为体育摄影里的“标头”，428规格的产品不可或缺，它的推出让无反系统拍摄体育赛场更加有了底气。
400mm F2.8是焦距最长的能够达到F2.8的定焦镜头，在新闻和体育摄影中属于万金油的角色，同规格的单反系统产品已经非常成熟了，也推出过数量众多的428，下面就用FE 400mm F2.8 GM OSS的基本规格参数：从参数来看，索尼镜头的光学结构更加复杂，重量远比同规格单反镜头轻很多，这都是我们值得去关注的地方。
外形设计在之前的索尼试拍体验会上笔者其实已经摸过它了，这里再来给大家温故知新一下。
从外观设计来看，G大师镜头FE 400mm F2.8 GM OSS是很威猛的，体积长度为359mm，直径为151.8mm，基本上与同规格的单反系统镜头一致，但它的重量却仅有2895克，这一点远比单反镜头要轻不少。
这类高端的顶级大炮一般都会附送一个镜头箱，索尼也不例外。
镜头箱采用了坚固的工程塑料材质，既减轻了重量又有很好的防护作用，内部除了镜头外，还能安放滤镜。
除了镜头箱外，它还附带有镜头遮光罩、背带、镜头前盖等。
它采用了镁合金材料，一方面拥有了坚固耐用的机身，另外还有效的减轻了整体重量。
在镜头正上方配有一个铭牌，上面有具体的规格和产地，如此昂贵的产品必然要日本本土制造喽。
在镜头前部配有宽大的对焦环，方便用户快速进行焦点微调，对于体育摄影来说至关重要。
而在变焦环前端还有一个独特的多功能控制环和对焦点锁定按钮。
在AF-C模式下，当按下锁定钮后可以停止连续对焦动作，让摄影师更方便拍摄静止目标。