佳能RF100-500mm长焦变焦镜头
佳能RF100-500mm长焦变焦镜头佳能不久前发布了一支L专业级红圈长焦镜头RF100-500mm F4.5-7.1 L IS USM，这也是R系统无反镜头里的第一支专业超长焦变焦镜头，针对摄影师以及摄影发烧友，更强调成像画质以及高速捕捉能力。让用户可无需安装转接环，直接享受原生卡口的便利性。
01外形操控
从外形上看，这支RF口镜头设计与单反长焦头并没什么两样，依然采用了熟悉的白色镜身以及象征身份的红圈，同时专业镜头上众多的功能按钮也一并配备，有了那股熟悉的味道！
镜头的重量为1530克（含脚架环），体积为93.8×207.6毫米，考虑到它的长焦端扩展到了500mm，与单反时代的EF 100-400mm f/4.5-5.6L IS USM相比，它的便携性上还是占有一定的优势。https://p26-sign.toutiaoimg.com/pgc-image/b252dd76b99e4668bb77a86ae83cd2bd~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=A%2FzQRRG41xg2YvmLeM5FtFNE9q8%3D
镜头前端配备了宽大的变焦环，手感阻尼很好，可以让摄影师在保持平稳重心的情况下手持快速调整焦距。镜头后部则配备了手动对焦环以及佳能无反系统里独有的多功能控制环。https://p3-sign.toutiaoimg.com/pgc-image/c06c4615ccf74c74b0e485e38931fe79~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=Hyg9YsJtvgAzRjHvq2kXcNJ6cVs%3D
它也配备了与单反100-400mm镜头相同的阻尼调节环，摄影师可以轻松的设置镜头变焦阻尼，当把镜头的变焦阻尼调紧后，即使镜头朝下，镜筒也不会伸出。https://p3-sign.toutiaoimg.com/pgc-image/f0351f01ed5e4425865025cd505e652a~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=NCAqkWHNS6SLkjyLF0hz6kl6Mys%3D
镜头一侧配备了对焦距离限位器、AF/MF对焦切换、防抖开关以及防抖模式4个功能按钮。https://p3-sign.toutiaoimg.com/pgc-image/21844beaef6a44bda4c1a3fef3021a72~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=WiIjESG22Sw8ahqW9oA%2BnArhJ6E%3D
它的滤镜口径为77mm，可以方便的安装圆形滤镜片。https://p3-sign.toutiaoimg.com/pgc-image/e80fb0247aa44301aa37d128db926a17~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=sOri05ZKbtiGs8vcaCODOUBO6AQ%3D
搭配的遮光罩采用了滑动式圆偏光滤镜调整窗，在使用偏光滤镜等拍摄时，无须取下遮光罩便可轻松进行调节。https://p3-sign.toutiaoimg.com/pgc-image/df96064d51714f8392eec4638aee8a8e~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=iC36Tf%2B%2Bpr8qsFKwHRzOrsYWy9c%3D
镜头后卡口采用了金属材质。https://p3-sign.toutiaoimg.com/pgc-image/fe11a9929ad546e99f3ad5122f2cacf0~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=KDCsvLiBjK7HQcsWwwaxle1jhEI%3D
RF100-500mm F4.5-7.1采用了可拆卸式脚架环。https://p3-sign.toutiaoimg.com/pgc-image/069e3f4a98cf4f95845adc67163e2c88~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=4bbjoQflTLmZ%2Fd3W0XlhgpaCFiQ%3D
与EOS R6搭配整体的平衡感不错，机动性方面比单反系统更有优势。https://p3-sign.toutiaoimg.com/pgc-image/34c49b16dc2e475789f184357be88b4d~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=oZAHBrTxHbxZXxsd6ACINYAFoqo%3D
02出色画质表现
RF100-500mm F4.5-7.1 L IS USM属于佳能镜头里的高级L系列，表明了它在成像上具备了很强实力。这支镜头充分利用无反相机短法兰距的优势进行了全新的光学设计，它内置了多达6片的UD低色散镜片以及1片超级UD镜片，最大程度的校正确保画面整体的成像。同时还采用了ASC镀膜，用以抑制逆光下的眩光，如此豪华的镜片配置的确让人眼前一亮。
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从官方给出的MTF曲线来看，无论是100mm还是500mm端的中心锐度表现良好，均可在0.8以上，相对来说100mm端的边缘成像略差。500mm长焦端的边缘成像则更接近于中心的水平。https://p3-sign.toutiaoimg.com/pgc-image/525ea5366f274de1bc64cc837246bbc0~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=78LSM4v82Ny2QldzZ9WpwybSBTg%3D
笔者对这支镜头的远距离拍摄锐度进行实拍测试，使用EOS R6机身，关闭所有机身降噪及镜头校正功能，RAW后期转JPG进行100%放大（图片左侧为中心部分，右侧为边缘部分）https://p3-sign.toutiaoimg.com/pgc-image/44816b9a775544ffaff34df2bb9501be~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=e%2FzyFXWDveDxZ4uQAnDJQvN64mk%3D100mm端测试原图
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100mm焦距下的中心锐度非常不错，最大光圈F4.5已非常锐利了。但边缘锐度有所欠缺，当光圈缩小到F5.6后锐度开始提升，到F8时边缘锐度相对较好。F8-F11是100mm端的最佳成像光圈，当光圈小至F22后整体锐度又开始下降。https://p3-sign.toutiaoimg.com/pgc-image/d7ab1f5f139245b6a54bb3a4cc7709e4~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=xxLSomjQhx18IDjep6EYve%2B5Juc%3D500mm端测试原图
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500mm端的中心锐度表现也比较不错，最大光圈F7.1就已经可放心使用了。光圈缩小到F11后，中心和边缘锐度达到了最佳的效果，从光圈F22开始锐度开始下降。
总的来说，这支镜头的中心锐度是足以让人满意，即使在超远拍摄距离上，摄影师仍可放心的使用最大光圈。
下面通过实拍进一步展示RF100-500mm F4.5-7.1 L IS USM在EOS R6机身上的成像表现：
https://p3-sign.toutiaoimg.com/pgc-image/f634f062b0c648baac056925d8dd52dc~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=rubl15WqCQMohHMehg6kcYmvQss%3D原图(光圈：F7.1 焦距：500mm)
https://p3-sign.toutiaoimg.com/pgc-image/d0893685cee6474898e7b9a7d3bebc4e~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=WVcm08IeQH4WbzjG6mphS7X5xLY%3D100%放大
https://p3-sign.toutiaoimg.com/pgc-image/b23e7ab470ed4bedbcff24b70d1cbdbf~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=mZwDSTxeRE7xzA2ozmpGg8cM%2FKc%3D原图（光圈：F5 焦距：150mm）
https://p3-sign.toutiaoimg.com/pgc-image/a79248aead88455a89cd6c1e3c80c76b~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=0C2FrVshU0ewUTZghVMg7AlirmA%3D100%放大
https://p3-sign.toutiaoimg.com/pgc-image/d01c74f0fbfc46ffafc45dbc6f4cf83e~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=thn7hzb5BXe93HLCI3pkj1s8EHs%3D原图（光圈：F7.1 焦距：500mm）
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在实拍中，与2000万像素传感器机身搭配可以得到细节丰富的照片。特别是在远距离拍摄体育照片时，依然能够保持良好的锐度和反差。如果与更高像素的R5等机身搭配，相信它的成像会更加优秀。
03光圈与虚化
这支长焦镜头为了整体器材的重量控制，将长焦端的最大光圈控制到了F7.1。虽然光圈不及EF 100-400mm f/4.5-5.6L IS USM大，但长焦端多了100mm，加强了远摄能力，光圈势必要作出一定妥协。
在暗光环境下，就需要使用机身高感进行拍摄，不过好在目前R5/R6的高感画质不错，一定程度上可以弥补光圈小的问题。https://p3-sign.toutiaoimg.com/pgc-image/d9db9b0df81940b9917d6945188794e8~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=%2BRa%2FBaiAcMgPUCOtRnerWe3rM4w%3D
这支镜头的虚化表现让我感到满意，只要控制好拍摄距离，利用500mm的焦距是完全可以拍摄到极强的虚化效果的。https://p3-sign.toutiaoimg.com/pgc-image/16e48ac31cfc46289d6301f4f9058f68~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=RUVIXM1fpEocFwwmXItECeNTygk%3DF7.1
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在F7.1光圈下背景虚化是比较柔和的，点光源光斑比较明显，焦外过渡也很自然。https://p3-sign.toutiaoimg.com/pgc-image/ba0b51f22e9442b0aa427f9520a1a9e9~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=m9tVbQ%2FchZd4z4rcu7gPRXLH7fM%3D
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04对焦性能良好
RF100-500mm F4.5-7.1 L IS USM使用了双NANO USM超声波对焦马达，并采用浮动对焦方式。小型的NANO USM可以实现安静的对焦，并能对移动目标作出快速的反应,同时还能够更好的控制镜头体积和重量，
由于R6采用了与1DX3相同的对焦算法以及新的第二代全像素双核对焦系统，因此机身的对焦精度和成功率较以往机型有了很大的提高。与这支镜头搭配，当开启面部+追踪对焦模式后，其对体育运动以及动物等题材都有不错的表现。在光线良好的情况下，对焦快速且持续跟踪能力较为出色。在光照条件一般的环境下，受到镜头最大光圈限制的因素影响，整体的对焦速度会稍有下降。https://p3-sign.toutiaoimg.com/pgc-image/d7d5c67d2aa24968adbf4bccccd99631~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=G1H3M%2BWb6qkiXNO%2FXavUTp81VjU%3D
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05防抖性能出色
这支镜头内置了佳能独有的IS防抖系统，在与新款EOS R5/R6机身搭配时，还能够实现机身+镜头的双防抖性能，可实现最大相当于6级快门速度的手抖动补偿效果。
笔者通过实拍对RF100-500mm F4.5-7.1 L IS USM的防抖进行了测试：https://p3-sign.toutiaoimg.com/pgc-image/f882cfce3711440db1715794e90a0af2~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=1M8JVg9HrK1CeVHVI6FFygDB6sE%3D快门速度：1/10秒 焦距：500mm
https://p3-sign.toutiaoimg.com/pgc-image/d03bf7e5949b4dda9fe5a5464a16c5bd~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=3LDnS%2BNeTNapnKdEo0Q4pPTYivo%3D快门速度：1/5秒 焦距：500mm
可以看到使用长焦500mm端的情况下，1/10秒快门速度手持拍摄，双防抖可以轻松的对抖动的画面进行补偿。即使在1/5秒这样比较极端的情况下，双防抖依然起到了很好的校正作用。
利用双防抖特性，摄影师可以适当的降低ISO来拍摄画质更好的照片。https://p3-sign.toutiaoimg.com/pgc-image/46884f7516b14481b29eb418f306e81d~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=TejorEbne%2FXZKm2m909%2BzaYPUsw%3D
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除了适合静态照片拍摄的防抖模式外，摄影师还可以选择针对移动目标的防抖，模式2适用于固定方向的追随拍摄，而模式3则适合进行不规则移动的场合。
06试用样片https://p3-sign.toutiaoimg.com/pgc-image/57f89f965d2143f6911ba09910195255~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=3BoWFWVFm9mqNHWukhDMiL8ccgw%3D
https://p3-sign.toutiaoimg.com/pgc-image/174c93b99f094f35ba15821332ec75df~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=fMd6JR6WAQ4W%2BrGGn0pcxQ6AeBc%3D
https://p3-sign.toutiaoimg.com/pgc-image/66517a0fcc7a4ba89192e5cfeb79c5a7~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=%2BfTDDWNmCP4Ui5FYuh9E9Gs0ntc%3D
https://p3-sign.toutiaoimg.com/pgc-image/c5800169bbfe4e7aacccd32de9408d49~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1707747990&x-signature=YJIPt37blpCbPpDEeRnSt%2BNVwpg%3D
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07试用总结
RF100-500mm F4.5-7.1 L IS USM的发布让佳能无反系统终于拥有了原生的“红圈大白头”，给了体育、新闻、生态摄影师一个很好的选择。L级镜头不用多说，依然保持了单反时代专业长焦的设计标准，从对焦到成像都具备了很好的性能。特别是它的500mm长焦端在超远距离上依然能有很好的锐度表现，这非常难得。与新发布的EOS R5/R6搭配，器材整体的重量比单反系统更轻，是一套机动性很强的长焦摄影组合。
优点
1、成像画质出色2、防抖性能不错，与EOS R5/R6还可组成双防抖系统3、镜头整体重量控制不错4、对焦速度较快且声音安静图文来自网络，如有侵权请与我们联系！
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