據CANON WATCH網站消息指出,近期Canon在美國註冊兩支高倍率變焦鏡頭專利,雖然不知道是否量產,不過頗值得期待~~
目前RF鏡頭體系已有一顆 RF 100-500mm F4.5-7.1L IS USM超倍率變焦鏡頭,問世至今也有相當高的市場評價,或許是受到這樣激勵,Canon近期在美國註冊了 200-500mm F4 與 RF 300-800mm F8 這兩顆鏡頭專利,雖然沒有標明是 RF 對應接口,不過 Canon 幾年前就已宣布不再開發新焦段的 EF 鏡頭,所以這兩顆鏡頭未來若有考慮量產的話,應該就是 RF 接口無誤,不過按照以往經驗,從專利申請到實際量產問世(也有可能就不量產了),通常都要好幾年以上的時間,如有興趣的朋友們可以持續關注喔~~
Example 1
- Focal length: 206.00-485.01
- F value: 4.09-4.10
- Half angle of view: 6.00-2.55
- Image height: 21.64
- Overall length: 486.99
- Back focus: 53.96
Example 3
- Focal length: 154.55-585.00
- F value: 5.10-6.51
- Half angle of view: 7.97-2.12
- Image height: 21.64
- Overall length: 288.00-388.00
- Back focus: 15.00-95.75
Example 4
- Focal length: 205.00-390.00
- F value: 4.10
- Half angle of view: 6.02-3.18
- Image height: 21.64
- Overall length: 367.09
- Back focus: 46.68
Example 5
- Focal length: 305.00-774.99
- F value: 8.09-8.10
- Half angle of view: 4.06-1.60
- Image height: 21.64
- Overall length: 489.78
- Back focus: 100.04