PATENT: CANON EF 16-35 F/2.8L III - PhotoGear版

本页内容为未名空间相应帖子的节选和存档，一周内的贴子最多显示50字，超过一周显示500字访问原贴

PhotoGear版 - PATENT: CANON EF 16-35 F/2.8L III

相关主题
● EF 24-70 f/2.8L II Patent Published	● 新手是不是不需要这个Canon EF-S 55-250mm f/4.0-5.6 IS Teleph
● canon新专利啊	● pls help me choose one from canon 18-200, tamron 18-250, 18-270
● PATENT: CANON EF 28-560MM F/2.8-5.6L USM	● N70-200 f4
● 不知道 Canon EF extender 2X 怎么样	● 佳能的这一套1500值不值?
● lots of replacements.	● CANON EF 24-70MM F/2.8L IS IN DEVELOPMENT?
● canon 35mm f/2.8 1:2 marco	● Canon EF-M 85mm f/1.8 IS STM?
● 业务贴，340IS+1.4和456怎么比？	● Canon EF 35mm f/1.4L II Q1 2015?
● Dpreview: Sony RX10 III destroys the competition	● (CW2) Canon/Sony Patent Exchange on Sensor?

相关话题的讨论汇总
话题: patent话题: ef话题: canon话题: iii话题: eg

进入PhotoGear版参与讨论

(共1页)

y*b
发帖数: 3190

"a patent showing an upgraded optical formula has appeared.
Patent Publication No. 2014-206674
Published 2014.10.30
Filing date 2013.4.15
Example 1
Zoom ratio 2.06
Focal length f = 16.49-23.74-33.94mm
Fno. 2.91
Half angle of view ω = 52.69-42.35-32.51 °
BF 38.74-48.38-63.65mm
Source: [EG]"
http://www.canonrumors.com/2015/05/patent-canon-ef-16-35-f2-8l-

(共1页)

进入PhotoGear版参与讨论

相关主题
● (CW2) Canon/Sony Patent Exchange on Sensor?	● lots of replacements.
● PATENT: CANON EF 10MM F/2.8	● canon 35mm f/2.8 1:2 marco
● CANON PATENT FOR 58MM F/1.4 LENS	● 业务贴，340IS+1.4和456怎么比？
● [转贴]算算各家DSRL理论上可实现的最大光圈值	● Dpreview: Sony RX10 III destroys the competition
● EF 24-70 f/2.8L II Patent Published	● 新手是不是不需要这个Canon EF-S 55-250mm f/4.0-5.6 IS Teleph
● canon新专利啊	● pls help me choose one from canon 18-200, tamron 18-250, 18-270
● PATENT: CANON EF 28-560MM F/2.8-5.6L USM	● N70-200 f4
● 不知道 Canon EF extender 2X 怎么样	● 佳能的这一套1500值不值?

相关话题的讨论汇总
话题: patent话题: ef话题: canon话题: iii话题: eg

#	版面	帖数(主题数)
-	全站	4871 (796)
1	Military	3777 (569)
2	Stock	341 (51)
3	Joke	117 (17)
4	History	116 (3)
5	Automobile	100 (9)
6	USANews	55 (9)
7	Midlife	45 (1)
8	Headline	41 (41)
9	Dreamer	33 (13)
10	FleaMarket	32 (20)
11	Living	30 (7)

boards

未名新帖统计// 7月16日

历史上的今天