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頁次:1/2
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#跟帖# Thank you for sharing your real life experience.
[攝影沙龍] - 二泉映月09(0 bytes )
2012-05-02
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#跟帖# Don't know. I mainly design high performance millitry lens, know
[攝影沙龍] - 二泉映月09(0 bytes )
2012-05-02
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#跟帖# dont't know exactly, probably around 1900.
[攝影沙龍] - 二泉映月09(0 bytes )
2012-05-02
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說些鏡頭設計.
[攝影沙龍] - 二泉映月09(850 bytes )
2012-05-02
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#跟帖# 噢,知道了。
[攝影沙龍] - 二泉映月09(0 bytes )
2012-02-01
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#跟帖# 完全正確。
[攝影沙龍] - 二泉映月09(0 bytes )
2012-02-01
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#跟帖# 謝謝指正。批量生產非球麵鏡用模子壓成本會低很多。
[攝影沙龍] - 二泉映月09(93 bytes )
2012-02-01
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#跟帖# 噢。有趣。現在還有業餘愛好者自己在家磨鏡片的。
[攝影沙龍] - 二泉映月09(0 bytes )
2012-02-01
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#跟帖# 噢,我們現在也稍涉及點NVG
[攝影沙龍] - 二泉映月09(0 bytes )
2012-02-01
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#跟帖# Now yes! Before with Coherent Inc.
[攝影沙龍] - 二泉映月09(0 bytes )
2012-02-01
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#跟帖# 握手。我不玩攝影,不熟悉外麵常用的那些鏡頭。
[攝影沙龍] - 二泉映月09(0 bytes )
2012-02-01
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#跟帖# 對。幾片鏡片可以大體完成的任務,為了校正各種象差會變成幾十片鏡片
[攝影沙龍] - 二泉映月09(0 bytes )
2012-02-01
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#跟帖# 每個品種玻璃都有幾個標準數據,如折射率,阿貝數9Abbe)等。
[攝影沙龍] - 二泉映月09(364 bytes )
2012-02-01
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#跟帖# See here
[攝影沙龍] - 二泉映月09(525 bytes )
2012-02-01
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#跟帖# 樣板成本可以高很多,慢慢磨。不是一回事,不可能一人每天磨幾十個樣版
[攝影沙龍] - 二泉映月09(0 bytes )
2012-02-01
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象差(aberration)是個統稱,其中包括很多類型
[攝影沙龍] - 二泉映月09(798 bytes )
2012-02-01
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很多“低質量”玻璃是很有用的
[攝影沙龍] - 二泉映月09(491 bytes )
2012-02-01
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普通鏡片磨製的表麵平整度
[攝影沙龍] - 二泉映月09(599 bytes )
2012-02-01
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回J1du網友,鍍膜不會影響鏡頭設計
[攝影沙龍] - 二泉映月09(183 bytes )
2012-02-01
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#跟帖# I need run, will talk more tomorrow or this evening
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# I need run, will talk more about lens design and fabrication tom
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# 對。拚的是公司的名氣,材料來源,銷售渠道,生產管理安排等等。
[攝影沙龍] - 二泉映月09(37 bytes )
2012-01-31
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說說鏡頭設計的流程
[攝影沙龍] - 二泉映月09(721 bytes )
2012-01-31
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#跟帖# I see.
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# OK, thanks!
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# See my response a few steps above, no such a thing as 超焦距.
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# Yes, exactly!
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# 行業內沒有超焦距這個說法, 沒有這種神奇的東西
[攝影沙龍] - 二泉映月09(75 bytes )
2012-01-31
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#跟帖# 我沒有藝術細胞,隻能從技術上談談。
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# Who say 超焦距?I don't know what this mean.
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# 有。離實用還遠。
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# The MTF Chicago show me only till 40L/mm, I think they should sh
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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Finally, a little bit about my credit
[攝影沙龍] - 二泉映月09(203 bytes )
2012-01-31
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#跟帖# 哈哈,不知道。單從外觀上難說。
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# Very good MTF, wonder how the MTF will be at higher spatial freq
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# Many different applications, so there is no "normal focal length
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# Here is my comment
[攝影沙龍] - 二泉映月09(164 bytes )
2012-01-31
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看了幾個民用鏡頭的MTF線。這裏有點奧妙
[攝影沙龍] - 二泉映月09(114 bytes )
2012-01-31
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#跟帖# 是。民用也用不著很好的。
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# What is the MTF at the field edge? At field center it's naturall
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# See my anwser above.
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# Here you are
[攝影沙龍] - 二泉映月09(473 bytes )
2012-01-31
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#跟帖# 是的。我看到過一個名牌變焦鏡頭在有些地方MTF=0,忘了哪個牌子.
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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不知民用鏡頭是否給畸變數據?一般應該是百分之幾。
[攝影沙龍] - 二泉映月09(97 bytes )
2012-01-31
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#跟帖# 好的。順便要把那鏡頭的焦距,光圈也告訴我。
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# Distortion is also important
[攝影沙龍] - 二泉映月09(202 bytes )
2012-01-31
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#跟帖# 這是個籠統的比喻。具體點說
[攝影沙龍] - 二泉映月09(241 bytes )
2012-01-31
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#跟帖# 你如果能搞到民用鏡頭的modulation transfer function curve,我給你解釋, 估計不給。
[攝影沙龍] - 二泉映月09(0 bytes )
2012-01-31
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#跟帖# 專業鏡頭好一點,大概就是50-60。
[攝影沙龍] - 二泉映月09(114 bytes )
2012-01-31
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說幾句民用攝影鏡頭
[攝影沙龍] - 二泉映月09(350 bytes )
2012-01-31
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頁次:1/2
每頁50條記錄,
本頁顯示1
到50,
共51
分頁:
[1]
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[尾頁]
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