{"meta":{"id":"https:\/\/api.iclient.ifeng.com\/ipadtestdoc?aid=ucms_7yjQm8TFKy4","type":"doc","o":"1","documentId":"ucms_7yjQm8TFKy4"},"body":{"newStatus":"1","documentId":"ucms_7yjQm8TFKy4","staticId":"ucms_7yjQm8TFKy4","title":"佳能EF 40mm F2.8 STM轻薄的饼干镜头","shareTitle":"佳能EF 40mm F2.8 STM轻薄的饼干镜头","thumbnail":"http:\/\/d.ifengimg.com\/w150_h106_q100\/x0.ifengimg.com\/res\/2020\/4F10F7B2DC50809D43CDA88FBC97C871CFCB8A9D_size70_w640_h480.jpeg","source":"ZOL中关村在线","author":"","editorcode":"weMedia","editTime":"2020-08-07 05:02:00","updateTime":"2020\/08\/07 05:02:00","wapurl":"http:\/\/\/\/feng.ifeng.com\/c\/7yjQm8TFKy4","introduction":"","wwwurl":"http:\/\/\/\/feng.ifeng.com\/c\/7yjQm8TFKy4","commentsUrl":"ucms_7yjQm8TFKy4","commentCount":0,"text":"
佳能EF 40mm F2.8 STM是一枚体积轻薄的饼干镜头,安装在佳能单反上甚至会让人忽略掉它的存在。目前在京东商城的促销价格是999元。<\/p>
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佳能EF 40mm F2.8 STM<\/p>
EF 40mm f\/2.8 STM是对应全画幅的轻薄型标准定焦镜头。最大直径约68.2毫米,厚约22.8毫米,重量约130克,安装在相机上时只比机身手柄略突出一点。导入全新光学技术实现了F2.8的明亮大光圈,同时搭载GMo(玻璃模铸非球面)镜片有效补偿多种像差,周边部都可获得锐利表现。<\/p>
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佳能EF 40mm F2.8 STM<\/p>
7片叶片的圆形光圈带来美丽的虚化,灵活运用约0.3米的最近对焦距离还能够拍摄特写。可自动对焦,适合进行抓拍,外形设计不易给被摄体造成压迫感,也适合用于人像摄影。安装在APS-C画幅数码单反相机上以35mm规格换算能够获得相当于约64mm的视角,可以作为带中远摄倾向的标准镜头使用。<\/p>
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佳能EF 40mm F2.8 STM<\/p>
对焦镜片的驱动采用了新开发的STM步进马达,可实现安静、流畅的自动对焦,适合短片拍摄。由于采用电子对焦环,轻松操作即可实现准确合焦,也对应全时手动对焦。另外,合理实施镀膜等抑制了鬼影和眩光的产生,可获得清晰、通透的画质。<\/p>","img":[{"url":"http:\/\/d.ifengimg.com\/mw640_q100\/x0.ifengimg.com\/res\/2020\/4F10F7B2DC50809D43CDA88FBC97C871CFCB8A9D_size70_w640_h480.jpeg","size":{"width":"640","height":"480"}},{"url":"http:\/\/d.ifengimg.com\/mw640_q100\/x0.ifengimg.com\/res\/2020\/9D419EAC0928325CCA9D9E3C0FBDFA0476782EBF_size68_w640_h480.jpeg","size":{"width":"640","height":"480"}},{"url":"http:\/\/d.ifengimg.com\/mw640_q100\/x0.ifengimg.com\/res\/2020\/17E5616E8AFA2E8FC5C355BB4EADCAEE82837E45_size51_w640_h480.jpeg","size":{"width":"640","height":"480"}}],"summary":"佳能EF40mmF2.8STM是一枚体积轻薄的饼干镜头,安装在佳能单反上甚至会让人忽略掉它的存在。目前在京东商城的促销价格是999元。佳能EF40mmF2.8S","sharesummary":"佳能EF40mmF2.8STM是一枚体积轻薄的饼干镜头,安装在佳能单反上甚至会让人忽略掉它的存在。目前在京东商城的促销价格是999元。佳能EF40mmF2.8S","commentType":"0","wemediaEAccountId":"223","showclient":"0","shareurl":"https:\/\/ishare.ifeng.com\/c\/s\/v002QqkngD2gDqppYRS0Bz9QdsxL0RCxmYS9QcqnfYOC-_O8__","praise":"1","like_num":"1"}}