CANONRUMORS上出現了Canon新專利情報,專利是有關有一支 CANON EF 135MM F/2 L W/ APODIZATION FILTER ,CANON 135MM F/2 L 推出有一些年代了,筆者也有一支,是一支對焦快速成像優秀的鏡頭

而新專利如下:

按照視角,光圈,焦距,應該是135F2 了,也是時候推出新版本了
APD 變跡濾鏡在 minolta / sony 135mm STF , FUJINON XF56mm F1.2 R APD , Laowa 105mm f/2 STF上都有使用,其實類似一塊外圈通光度低,內圈通光度高的漸變灰濾鏡。減光後會令焦外的二線性光減少,而且焦外失焦bokeh也會由中間最亮慢慢變暗,算是用光學方式把焦外變漂亮:但缺點是通光度因此而下降不少

Patent publication number 2016-218444 (Google Translate)

  • Release date 2016.12.22
  • Application date 2015.5.20
  • Focal length 130.98
  • F number 2.06
  • Field of View 9.38
  • Image height 21.64
  • Lens total length 159.05
  • BF 53.99
  • Even when there is vignetting, a good blurred image at all angle of view

Read more: http://www.canonrumors.com/patent-canon-ef-135-f2l-wapodization-filters/#ixzz4UIbfj2o4

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