轉戰江湖十餘年的老將大白即將退休了嗎?
2014年傳言已久的新大白可能會現身囉
Canon最近提出新境專利EF 70-400 f/4.5-5.6L IS.
此鏡有可能會在今年上市
對照騰龍新推出的超望遠變焦鏡
讓這個專利成真的可能性更高了
2014真是Canon的爆發年和小朋友的出走年?
來源: CR
內文:
2014 will see the replacement of the Canon EF 100-400 f/4.5-5.6L IS, and we should see some new new patents showing new optical formulas for its replacement. Below is a patent for an EF 70-400 f/4.5-5.6L IS.
Description and self-interpretation of the patent literature
◾Patent Publication No. 2014-21256,2014-21257 ◾Publication date 2014.2.3
◾Filing date 2012.7.18
◾Example 2 ◾Zoom ratio 5.45
◾Focal length f = 71.33-144.71-388.95mm
◾Fno. 4.63-4.84-5.83
◾Half angle ω = 16.87-8.50-3.18 °
◾Image height Y = 21.64
◾240.00-284.68-303.83mm overall length of the lens
◾BF 75.92-79.30-95.93mm
◾6-group zoom of positive and negative positive and negative positive and negative
◾(Part of the fourth group) anti-vibration
◾Rear Focus (Group 6)
Source: [EG]
